US 12,238,711 B2
Support of enhanced dynamic codebook with different DCI formats
Reem Karaki, Aachen (DE); and Min Wang, Luleå (SE)
Assigned to Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
Appl. No. 17/763,894
Filed by Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
PCT Filed Sep. 25, 2020, PCT No. PCT/EP2020/076896
§ 371(c)(1), (2) Date Mar. 25, 2022,
PCT Pub. No. WO2021/063828, PCT Pub. Date Apr. 8, 2021.
Claims priority of provisional application 62/908,109, filed on Sep. 30, 2019.
Prior Publication US 2022/0361211 A1, Nov. 10, 2022
Int. Cl. H04W 72/04 (2023.01); H04L 1/1812 (2023.01); H04L 1/1867 (2023.01); H04W 72/1273 (2023.01); H04W 72/23 (2023.01); H04W 76/00 (2018.01); H04W 88/08 (2009.01)
CPC H04W 72/1273 (2013.01) [H04L 1/1812 (2013.01); H04L 1/1887 (2013.01); H04W 72/23 (2023.01)] 11 Claims
OG exemplary drawing
 
1. A method performed by a wireless communication device for dynamic codebook Hybrid Automatic Repeat Request (HARQ) feedback, the method comprising:
receiving, from a base station, a downlink control information (DCI) in accordance with a fallback DCI format, wherein:
the DCI comprises downlink scheduling information that indicates downlink resources allocated for a downlink data channel transmission to the wireless communication device; and
the fallback DCI format does not include an explicit indication of a downlink data channel group identifier of a downlink data channel group of the downlink data channel transmission;
attempting to receive and decode the downlink data channel transmission in accordance with the DCI;
determining a downlink data channel group for the downlink data channel transmission based on the DCI;
generating a dynamic codebook HARQ feedback for the downlink data channel group, the dynamic codebook HARQ feedback comprising HARQ feedback for the downlink data channel transmission;
transmitting the dynamic codebook HARQ feedback to the base station; and
receiving, from the base station, a request for dynamic codebook HARQ feedback for one or more downlink data channel groups comprising the determined downlink data channel group of the downlink data channel transmission,
wherein receiving the request comprises receiving second DCI comprising information that indicates that dynamic codebook HARQ feedback is requested for the one or more downlink data channel groups, wherein the second DCI is in accordance with an uplink DCI format, and wherein the uplink DCI format is such that the second DCI repurposes one or more downlink assignment index (DAI) fields as an indication of the one or more downlink data channel groups for which dynamic codebook HARQ feedback is requested.