US 11,757,495 B2
Channel state information for reference signals in a wireless communication system
Sebastian Faxér, Järfälla (SE); Robert Mark Harrison, Grapevine, TX (US); Andreas Nilsson, Gothenburg (SE); and Niklas Wernersson, Kungsängen (SE)
Assigned to TELEFONAKTIEBOLAGET LM ERICSSON (PUBL), Stockholm (SE)
Filed by Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
Filed on Feb. 7, 2022, as Appl. No. 17/666,179.
Application 17/666,179 is a continuation of application No. 16/621,806, granted, now 11,245,444, previously published as PCT/EP2018/065557, filed on Jun. 12, 2018.
Claims priority of provisional application 62/521,052, filed on Jun. 16, 2017.
Prior Publication US 2022/0166469 A1, May 26, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. H04W 4/00 (2018.01); H04B 7/0417 (2017.01); H04B 7/06 (2006.01); H04L 5/00 (2006.01); H04W 72/044 (2023.01); H04W 72/1273 (2023.01); H04W 72/541 (2023.01)
CPC H04B 7/0417 (2013.01) [H04B 7/0626 (2013.01); H04L 5/0057 (2013.01); H04W 72/046 (2013.01); H04W 72/1273 (2013.01); H04W 72/541 (2023.01)] 26 Claims
OG exemplary drawing
 
1. A method performed by a user equipment for reporting channel state information in a wireless communication system, wherein the user equipment is configured with two or more channel state information reference signal, CSI-RS, resources in a CSI-RS resource set, the method comprising:
selecting at least two CSI-RS resources from the CSI-RS resource set, wherein each of the at least two selected CSI-RS resources are associated to a set of spatially multiplexed layers, wherein different sets comprise different layers;
determining a preferred precoder matrix for each of the selected CSI-RS resources; and
transmitting a CSI report indicating each of the selected CSI-RS resources and the determined preferred precoder matrix for each of the selected CSI-RS resources.