US 11,990,973 B2
Beam management for a radio transceiver device
Anders Landström, Boden (SE); Arne Simonsson, Gammelstad (SE); Peter Ökvist, Luleå (SE); Magnus Thurfjell, Luleå (SE); Kjell Larsson, Luleå (SE); Medhat Mohamad, Luleå (SE); and Olle Rosin, Linköping (SE)
Assigned to Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
Appl. No. 17/919,458
Filed by TELEFONAKTIEBOLAGET LM ERICSSON (PUBL), Stockholm (SE)
PCT Filed Apr. 20, 2020, PCT No. PCT/IB2020/053710
§ 371(c)(1), (2) Date Oct. 17, 2022,
PCT Pub. No. WO2021/214512, PCT Pub. Date Oct. 28, 2021.
Prior Publication US 2023/0155661 A1, May 18, 2023
Int. Cl. H04B 7/06 (2006.01); H04B 7/0408 (2017.01)
CPC H04B 7/0695 (2013.01) [H04B 7/0408 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for beam management, the method being performed by a radio transceiver device, and the method comprising:
obtaining an angle spread value representing an angular spread of signal paths towards a second radio transceiver device;
selecting directional beams from an available set of directional beams to form a candidate set of directional beams, wherein a sparsity of directional beams in the candidate set relative to directional beams in the available set depends on the angle spread value; and
performing a beam management procedure that comprises choosing one of the directional beams from the candidate set to use for communication with the second radio transceiver device, wherein the choosing is based on measurement results of transmitting or receiving reference signals via the candidate set of directional beams.