US 12,003,341 B2
Communication method and communications apparatus for reduction of transmission latency of downlink data
Ruixiang Ma, Beijing (CN); Shengyu Li, Beijing (CN); and Lei Guan, Beijing (CN)
Assigned to Huawei Technologies Co., Ltd., Shenzhen (CN)
Filed by Huawei Technologies Co., Ltd., Shenzhen (CN)
Filed on Mar. 26, 2021, as Appl. No. 17/214,412.
Application 17/214,412 is a continuation of application No. PCT/CN2019/104375, filed on Sep. 4, 2019.
Claims priority of application No. 201811126382.7 (CN), filed on Sep. 26, 2018.
Prior Publication US 2021/0218513 A1, Jul. 15, 2021
Int. Cl. H04L 1/1867 (2023.01); H04W 72/0446 (2023.01); H04W 72/1273 (2023.01); H04W 72/50 (2023.01)
CPC H04L 1/1896 (2013.01) [H04W 72/0446 (2013.01); H04W 72/1273 (2013.01); H04W 72/535 (2023.01)] 18 Claims
OG exemplary drawing
 
1. A communication method, the method comprising:
determining, by a terminal device, a first time unit for receiving downlink data;
determining, by the terminal device, based on a nonnegative integer k1 corresponding to the downlink data, a second time unit in which feedback information corresponding to the downlink data is located, wherein a length of the first time unit is greater than or equal to a length of the second time unit, the k1 corresponding to the downlink data represents a quantity of time units from the first time unit to the second time unit in which feedback information corresponding to the downlink data is located, and the length of the second time unit is less than one slot; and
sending, by the terminal device, in the second time unit in which feedback information corresponding to the downlink data is located, a feedback codebook to a network device, wherein the feedback codebook comprises the feedback information corresponding to the downlink data,
wherein the feedback codebook comprises feedback information corresponding to a candidate occasion of a target second time unit, the candidate occasion is used by the terminal device to receive downlink data, and
the target second time unit is a set of second time units that is determined based on a k1 set and the second time unit in which the feedback information corresponding to the downlink data is located, and the k1 set is a set of values of k1, and the candidate occasion is determined based on configured time domain resources used by the terminal device to receive downlink data, wherein the configured time domain resources comprise a time domain resource whose last symbol belongs to the target second time unit.