US 11,818,066 B2
Method and apparatus for sending SRS
Jiafeng Shao, Beijing (CN); and Yongxia Lyu, Shanghai (CN)
Assigned to Huawei Technologies Co., Ltd., Shenzhen (CN)
Filed by HUAWEI TECHNOLOGIES CO., LTD., Guangdong (CN)
Filed on Feb. 10, 2021, as Appl. No. 17/172,598.
Application 17/172,598 is a continuation of application No. PCT/CN2019/099710, filed on Aug. 8, 2019.
Claims priority of application No. 201810912170.5 (CN), filed on Aug. 10, 2018.
Prior Publication US 2021/0167923 A1, Jun. 3, 2021
Int. Cl. H04L 5/00 (2006.01); H04L 1/00 (2006.01); H04L 1/1812 (2023.01); H04W 72/23 (2023.01)
CPC H04L 5/0051 (2013.01) [H04L 1/0003 (2013.01); H04L 1/1812 (2013.01); H04L 5/0094 (2013.01); H04W 72/23 (2023.01)] 18 Claims
OG exemplary drawing
 
1. A method for sending a sounding reference signal (SRS), comprising:
receiving, by a terminal device, downlink control information (DCI) on a physical downlink control channel (PDCCH), wherein the DCI comprises first indication information, and wherein the first indication information is used to trigger the terminal device to send an SRS; and
determining, by the terminal device and based on at least one of the DCI or higher layer signaling, a first time interval in a plurality of candidate first time intervals corresponding to a first subcarrier spacing, wherein the first time interval is used to determine whether the first indication information is valid, wherein the first subcarrier spacing comprises one of the following plurality of subcarrier spacings: a 15 kilohertz (kHz) subcarrier spacing, a 30 kHz subcarrier spacing, a 60 kHz subcarrier spacing, and a 120 kHz subcarrier spacing, and wherein a correspondence between the first subcarrier spacing and the first time interval meets at least one of the following conditions: a first time interval corresponding to the 15 kHz subcarrier spacing is less than or equal to eight symbols, a first time interval corresponding to the 30 kHz subcarrier spacing is less than or equal to 12 symbols, a first time interval corresponding to the 60 kHz subcarrier spacing is less than or equal to 24 symbols, or a first time interval corresponding to the 120 kHz subcarrier spacing is less than or equal to 42 symbols.