US 12,069,655 B2
Downlink data scheduling HARQ-ACK codebook feedback and generation methods and devices, and medium
Sa Zhang, Shanghai (CN); Huan Zhou, Shanghai (CN); and Xingya Shen, Shanghai (CN)
Assigned to BEIJING UNISOC COMMUNICATIONS TECHNOLOGY CO., LTD., Beijing (CN)
Appl. No. 17/419,247
Filed by BEIJING UNISOC COMMUNICATIONS TECHNOLOGY CO., LTD., Beijing (CN)
PCT Filed Nov. 20, 2019, PCT No. PCT/CN2019/119625
§ 371(c)(1), (2) Date Jun. 28, 2021,
PCT Pub. No. WO2020/134725, PCT Pub. Date Jul. 2, 2020.
Claims priority of application No. 201811636464.6 (CN), filed on Dec. 29, 2018.
Prior Publication US 2022/0078827 A1, Mar. 10, 2022
Int. Cl. H04W 72/1273 (2023.01); H04L 1/00 (2006.01); H04L 1/1607 (2023.01); H04L 1/1812 (2023.01); H04L 1/1829 (2023.01); H04L 1/1867 (2023.01); H04L 5/00 (2006.01); H04W 72/0446 (2023.01); H04W 72/23 (2023.01)
CPC H04W 72/1273 (2013.01) [H04L 1/0027 (2013.01); H04L 1/1607 (2013.01); H04L 1/1685 (2013.01); H04L 1/1812 (2013.01); H04L 1/1854 (2013.01); H04L 1/1858 (2013.01); H04L 1/1896 (2013.01); H04L 5/0053 (2013.01); H04L 5/0055 (2013.01); H04L 5/0091 (2013.01); H04W 72/0446 (2013.01); H04W 72/23 (2023.01)] 12 Claims
OG exemplary drawing
 
1. A downlink data scheduling Hybrid Automatic Repeat request-ACKnowledgement (HARQ-ACK) codebook feedback method, comprising:
determining whether a first HARQ-ACK sub-codebook sent by a user terminal is detected, wherein the first HARQ-ACK sub-codebook is a feedback generated after the user terminal receives a first Physical Downlink Shared CHannel (PDSCH) set, and the first PDSCH set is in a first scheduling group for scheduling the first PDSCH set;
when the first HARQ-ACK sub-codebook is not detected, transmitting to the user terminal Downlink Control Information (DCI) for triggering retransmission of the first HARQ-ACK sub-codebook, wherein the DCI for triggering the retransmission of the first HARQ-ACK sub-codebook comprises a first trigger group number field which is the same as a first scheduling group number field, the first trigger group number field is used to indicate a number of the first trigger group, and the first scheduling group number field is used to indicate a number of the first scheduling group; and
receiving the first HARQ-ACK sub-codebook retransmitted by the user terminal;
wherein before determining whether the first HARQ-ACK sub-codebook sent by the user terminal is detected, the method further comprises: transmitting to the user terminal DCI for scheduling the first PDSCH set;
wherein the DCI for scheduling the first PDSCH set comprises the first scheduling group number field, a first scheduling group Downlink Assignment Index (DAI) field, a second scheduling group DAI field, and other trigger group number field for indicating a number of other trigger group, wherein the first scheduling group DAI field is used to indicate a sum of Counter-DAI (C-DAI) of the first scheduling group and Total-DAL (T-DAI) of the other trigger group, and the second scheduling group DAI field is used to indicate a sum of T-DAI of the first scheduling group and the T-DAI of the other trigger group.