US 11,943,636 B2
Network node and method for beam management in a wireless communications network
Nicklas Johansson, Brokind (SE); Per Burström, Lulea (SE); Anders Landstrom, Boden (SE); and Kristina Hessler, Linköping (SE)
Assigned to Telefonaktiebolaget LM Ericsson (Publ), Stockholm (SE)
Appl. No. 17/264,042
Filed by Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
PCT Filed Aug. 20, 2018, PCT No. PCT/SE2018/050836
§ 371(c)(1), (2) Date Jan. 28, 2021,
PCT Pub. No. WO2020/040672, PCT Pub. Date Feb. 27, 2020.
Prior Publication US 2021/0306868 A1, Sep. 30, 2021
Int. Cl. H04W 16/28 (2009.01); H04B 7/08 (2006.01); H04W 72/044 (2023.01); H04W 72/23 (2023.01); H04W 72/542 (2023.01)
CPC H04W 16/28 (2013.01) [H04B 7/088 (2013.01); H04W 72/046 (2013.01); H04W 72/23 (2023.01); H04W 72/542 (2023.01)] 18 Claims
OG exemplary drawing
 
1. A method performed by a network node for beam management in a wireless communications network, the method comprising:
receiving from a User Equipment, UE, one or more first quality values measured by the UE on first reference signals transmitted by the network node in respective one or more beams comprised in a first set of candidate beams;
selecting for an upcoming data communication with the UE, a serving beam out of the first set of candidate beams based on the received quality values;
creating a rule related to signal quality;
obtaining one or more second quality values related to respective subsequent messages transmitted to the UE in the selected serving beam; and
as long as the rule is fulfilled with respect to tho second quality value, transmitting one or more further subsequent messages only in the serving beam, the rule defining a quality value based on at least one of the first quality values, and the rule fulfilled as long as the difference between the second quality value and the at least one of the first quality values is below a first threshold value and above a second threshold value.