US 12,294,432 B2
Estimating angular spread of a wireless channel
Bo Göransson, Sollentuna (SE)
Assigned to Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
Appl. No. 18/280,732
Filed by Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
PCT Filed May 4, 2021, PCT No. PCT/SE2021/050414
§ 371(c)(1), (2) Date Sep. 7, 2023,
PCT Pub. No. WO2022/235179, PCT Pub. Date Nov. 10, 2022.
Prior Publication US 2024/0154659 A1, May 9, 2024
Int. Cl. H04B 7/06 (2006.01); H04B 17/318 (2015.01); H04L 5/00 (2006.01)
CPC H04B 7/0617 (2013.01) [H04B 17/318 (2015.01); H04L 5/0023 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for estimating angular spread of a wireless channel between a first node and a second node, wherein the first node is a radio network node and the second node is a user equipment, UE, or vice versa, the method being performed in a spread estimator, the method comprising the steps of:
obtaining a wide-beam signal strength for a signal over the wireless channel using a selected wide-beam configuration of an antenna of the first node, the selected wide-beam configuration being the one, of a plurality of wide-beam configurations, that results in the greatest signal strength;
obtaining a narrow-beam signal strength for a signal over the wireless channel using a selected narrow-beam configuration of the antenna of the first node, the selected narrow-beam configuration being configured with a beam that is narrower than the selected wide-beam configuration, the selected narrow-beam configuration being the one of a plurality of narrow-beam configurations within a coverage area of the selected wide-beam configuration that results in the greatest signal strength;
determining a difference between the wide-beam signal strength and the narrow-beam signal strength; and
estimating angular spread of the wireless channel based on the difference.