US 12,489,567 B2
Method and device for determining HARQ codebook
Zuomin Wu, Guangdong (CN); and Yanan Lin, Guangdong (CN)
Assigned to GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD., Guangdong (CN)
Filed by GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD., Guangdong (CN)
Filed on Sep. 24, 2021, as Appl. No. 17/483,954.
Application 17/483,954 is a continuation of application No. PCT/CN2019/085386, filed on Apr. 30, 2019.
Prior Publication US 2022/0014317 A1, Jan. 13, 2022
Int. Cl. H04L 1/1812 (2023.01); H04L 1/1867 (2023.01); H04W 72/1273 (2023.01); H04W 72/23 (2023.01)
CPC H04L 1/1819 (2013.01) [H04L 1/1896 (2013.01); H04W 72/1273 (2013.01); H04W 72/23 (2023.01)] 8 Claims
OG exemplary drawing
 
1. A method for determining a Hybrid Automatic Repeat reQuest (HARQ) codebook, comprising:
receiving, by a terminal device, first Downlink Control Information (DCI), wherein the first DCI is used for scheduling a first Physical Downlink Shared Channel (PDSCH), the first PDSCH belongs to a first channel group in a plurality of channel groups, and the first DCI comprises first indication information and valid HARQ timing indicator information, and wherein the first indication information is used for indicating whether feeding back is triggered for a channel group except the first channel group in the plurality of channel groups, and the channel groups are PDSCH channel groups;
determining, by the terminal device, first uplink resource based on the valid HARQ timing indicator information;
determining, by the terminal device, a first HARQ codebook corresponding to the plurality of channel groups for the first uplink resource; wherein a quantity of the plurality of channel groups is predefined, and a HARQ codebook size of the first HARQ codebook is fixed in accordance with the predefined quantity of the plurality of channel groups; and
sending, by the terminal device, the first HARQ codebook to a network device;
wherein Downlink assignment indexes (DAIs) that correspond to the PDSCHs in the plurality of channel groups with different group indicators (GIs) are counted consecutively;
wherein when a first DAI corresponding to the first PDSCH in the first channel group is not an initial value,
information of a starting position of the first HARQ codebook is placeholder information; and wherein the placeholder information is NACK information.