US 12,432,015 B2
HARQ-ACK feedback method, terminal and base station
Junwei Wang, Beijing (CN); and Rui Zhao, Beijing (CN)
Assigned to DATANG MOBILE COMMUNICATIONS EQUIPMENT CO., LTD., Beijing (CN)
Appl. No. 17/918,123
Filed by DATANG MOBILE COMMUNICATIONS EQUIPMENT CO., LTD., Beijing (CN)
PCT Filed Apr. 12, 2021, PCT No. PCT/CN2021/086472
§ 371(c)(1), (2) Date Oct. 11, 2022,
PCT Pub. No. WO2021/213203, PCT Pub. Date Oct. 28, 2021.
Claims priority of application No. 202010328490.3 (CN), filed on Apr. 23, 2020.
Prior Publication US 2023/0133506 A1, May 4, 2023
Int. Cl. H04L 1/1812 (2023.01); H04W 72/12 (2023.01); H04W 72/23 (2023.01)
CPC H04L 1/1812 (2013.01) [H04W 72/12 (2013.01); H04W 72/23 (2023.01)] 18 Claims
OG exemplary drawing
 
1. A hybrid automatic repeat request-acknowledgment (HARQ-ACK) feedback method, performed by a terminal, comprising:
receiving broadcast/multicast scheduling signaling transmitted by a base station, and determining an uplink resource corresponding to unicast;
multiplexing, in response to detecting that a preset condition is satisfied, a first HARQ-ACK codebook corresponding to the broadcast/multicast scheduling signaling on the uplink resource corresponding to unicast, the preset condition being that both a HARQ-ACK feedback slot indicated by the broadcast/multicast scheduling signaling and a slot in which the uplink resource is located exist within a preset window,
wherein a start reference position of the preset window comprises at least one of:
a position of the HARQ-ACK feedback slot indicated by the broadcast/multicast scheduling signaling; or
a slot in which the PUCCH resource indicated by the unicast scheduling signaling is located; or
an end time of a physical downlink shared channel (PDSCH) corresponding to the broadcast/multicast scheduling signaling; or
a slot in which one of periodic uplink resources configured by the base station is located; or
a time for receiving broadcast/multicast scheduling signaling; and
wherein the start position offset and/or the length of the preset window satisfies any of the following:
the start position offset of the preset window is a positive value, a negative value, or 0 in response to the start reference position being a position of the HARQ-ACK feedback slot indicated by the broadcast/multicast scheduling signaling or a position of the slot in which the PUCCH resource indicated by the unicast scheduling signaling is located, a length of the preset window is one slot; or
the start position offset is d in response to the start reference position being the end time of the PDSCH corresponding to the broadcast/multicast scheduling signaling, wherein d is greater than or equal to the sum of a processing time for receiving PDSCH by the terminal and a time for multiplexing the first HARQ-ACK codebook corresponding to the broadcast/multicast scheduling signaling; or
the start position offset is a negative value in response to the start reference position being a slot in which one of the periodic uplink resources configured by the base station is located, or
the start position offset is a positive value or 0 in response the start reference position being a time for receiving the broadcast/multicast scheduling signaling, and the length of the preset window is from the start position to a position of the HARQ-ACK feedback slot indicated by the broadcast/multicast scheduling signaling.