US 11,855,729 B2
Uneven frequency-domain basis allocation for type II CSI enhancements
Niklas Wernersson, Kungsängen (SE); Sebastian Faxér, Stockholm (SE); and Maksym Girnyk, Solna (SE)
Assigned to Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
Filed by Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
Filed on Jun. 24, 2023, as Appl. No. 18/213,815.
Application 18/213,815 is a continuation of application No. 17/825,168, filed on May 26, 2022, granted, now 11,722,196.
Application 17/825,168 is a continuation of application No. 17/290,026, granted, now 11,349,542, issued on May 31, 2022, previously published as PCT/SE2019/051075, filed on Oct. 29, 2019.
Claims priority of provisional application 62/754,991, filed on Nov. 2, 2018.
Prior Publication US 2023/0336226 A1, Oct. 19, 2023
Int. Cl. H04B 7/06 (2006.01); H04B 7/0456 (2017.01)
CPC H04B 7/0626 (2013.01) [H04B 7/0478 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A host configured to operate in a communication system to provide an over-the-top (OTT) service, the host comprising:
processing circuitry configured to provide user data; and
a network interface configured to initiate transmission of the user data to a network node in a cellular network for transmission to a user equipment (UE), the network node having a communication interface and processing circuitry configured to perform operations comprising:
receiving a channel state information (CSI) report for a downlink channel, the CSI report indicating a plurality of precoder vectors, wherein each of the precoder vectors corresponds to a frequency sub-band of a bandwidth of the downlink channel, a precoder vector being expressed as a linear combination of spatial-domain components and frequency-domain components, wherein each of the spatial-domain components is associated with a respective set of one or more frequency-domain components and wherein a number of frequency-domain components associated with a first spatial-domain component is larger than a number of frequency-domain components associated with a second spatial-domain component, wherein the received CSI report includes an indication of linear combination coefficients for each combination of spatial-domain component and associated frequency-domain components;
determining precoding to use for transmitting data to the UE based at least in part on the CSI report; and
transmitting the user data from the host to the UE according to the determined precoding to provide the OTT service.