US 12,149,481 B2
Hybrid automatic repeat request-acknowledgement (HARQ-ACK) feedback position determining method and communications device
Yang Song, Dongguan (CN); and Na Li, Dongguan (CN)
Assigned to VIVO MOBILE COMMUNICATION CO., LTD., Dongguan (CN)
Filed by VIVO MOBILE COMMUNICATION CO., LTD., Dongguan (CN)
Filed on Apr. 27, 2022, as Appl. No. 17/731,219.
Application 17/731,219 is a continuation of application No. PCT/CN2020/125772, filed on Nov. 2, 2020.
Claims priority of application No. 201911090541.7 (CN), filed on Nov. 8, 2019.
Prior Publication US 2022/0255706 A1, Aug. 11, 2022
Int. Cl. H04L 5/00 (2006.01); H04L 1/18 (2023.01); H04L 1/1812 (2023.01); H04W 72/04 (2023.01); H04W 72/0446 (2023.01)
CPC H04L 5/0055 (2013.01) [H04L 1/1812 (2013.01); H04W 72/0446 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A method for determining a feedback position of hybrid automatic repeat request-acknowledgement (HARQ-ACK), comprising:
when a repetition scheme of a physical downlink shared channel (PDSCH) in one slot is configured or indicated, determining at least one candidate PDSCH reception occasion based on a start and length indicator (SLIV) of a time domain resource allocation (TDRA); and
determining, based on a first PDSCH scheduled by using downlink control information (DCI) and the at least one candidate PDSCH reception occasion, a feedback position of an HARQ-ACK corresponding to the first PDSCH in a preset HARQ-ACK codebook, wherein the first PDSCH is transmitted for one or more times,
wherein when the repetition scheme being scheme 2a or scheme 2b, a quantity of phase tracking reference signal (PTRS) ports of a frequency domain resource corresponding to each transmission configuration indicator (TCI) state is 1, a frequency density of the PTRS is a density of a frequency domain resource corresponding to each TCI state, wherein:
the scheme 2a is that transmission on all resources is performed by using one single coded codeword of a redundancy version (RV); and
the scheme 2b is that transmission on each non-overlapping frequency domain resource is performed by using one single coded codeword of an RV.