US 11,811,475 B2
Method and access network node for beam control
Kangqi Liu, Beijing (CN); Yipeng Zhang, Beijing (CN); and Huaisong Zhu, Beijing (CN)
Assigned to TELEFONAKTIEBOLAGET LM ERICSSON (PUBL), Stockholm (SE)
Appl. No. 17/782,205
Filed by Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
PCT Filed Dec. 6, 2019, PCT No. PCT/CN2019/123731
§ 371(c)(1), (2) Date Jun. 3, 2022,
PCT Pub. No. WO2021/109135, PCT Pub. Date Jun. 10, 2021.
Prior Publication US 2023/0032895 A1, Feb. 2, 2023
Int. Cl. H04B 7/06 (2006.01); H04W 72/51 (2023.01); H04W 72/21 (2023.01); H04B 7/0452 (2017.01); H04W 72/044 (2023.01)
CPC H04B 7/0617 (2013.01) [H04B 7/0452 (2013.01); H04W 72/046 (2013.01); H04W 72/21 (2023.01); H04W 72/51 (2023.01)] 20 Claims
OG exemplary drawing
 
1. A method performed by an access network node, comprising:
determining first spatial domain information of a channel between a first terminal device and the access network node, based on second spatial domain information of the channel estimated by uplink signals received previously from the first terminal device at multiple time points; and
determining beamforming weights for the first terminal device based on the first spatial domain information.