US 12,301,485 B2
Uplink precoding method, device and system
Wenhong Chen, Dongguan (CN)
Assigned to GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD., Guangdong (CN)
Filed by GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD., Guangdong (CN)
Filed on Jun. 23, 2021, as Appl. No. 17/356,264.
Application 17/356,264 is a continuation of application No. 16/616,377, granted, now 11,082,180, previously published as PCT/CN2017/085981, filed on May 25, 2017.
Prior Publication US 2021/0320770 A1, Oct. 14, 2021
Int. Cl. H04W 72/21 (2023.01); H04L 5/00 (2006.01); H04W 72/1268 (2023.01); H04W 72/23 (2023.01)
CPC H04L 5/0048 (2013.01) [H04L 5/0053 (2013.01); H04W 72/1268 (2013.01); H04W 72/21 (2023.01); H04W 72/23 (2023.01)] 18 Claims
OG exemplary drawing
 
1. An uplink pre-coding method, comprising:
acquiring, by a network-side device, a sounding reference signal (SRS) transmitted by a terminal device on at least one SRS resource;
sending, by the network-side device, downlink control information (DCI) for scheduling uplink data transmission to the terminal device, wherein the DCI comprises an SRS resource indication (SRI), and the DCI does not comprise information for indicating a pre-coding matrix for the uplink data and does not comprise indication information of a transmission layer number, the SRI is configured to indicate one or more target SRS resources in the at least one SRS resource, and
the SRI is used for the terminal device to determine a pre-coding scheme for uplink data according to the at least one SRS resource and the SRI and to pre-code the uplink data according to the pre-coding scheme, wherein each of the one or more target SRS resource corresponds to an uplink transmission layer; and
receiving, by the network-side device, the pre-coded uplink data from the terminal device.