US 11,949,481 B2
Signaling for mu interference measurement with NZP CSI-RS
Shiwei Gao, Nepean (CA); Sebastian Faxer, Stockholm (SE); and Siva Muruganathan, Stittsville (CA)
Assigned to Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
Filed by Telefonaktiebolaget LM Ericsson (publ), Stockholm (CA)
Filed on Oct. 29, 2021, as Appl. No. 17/513,998.
Application 17/513,998 is a continuation of application No. 17/365,253, filed on Jul. 1, 2021.
Application 17/365,253 is a continuation of application No. 16/753,215, granted, now 11,088,746, issued on Aug. 10, 2021, previously published as PCT/IB2018/057642, filed on Oct. 2, 2018.
Claims priority of provisional application 62/567,015, filed on Oct. 2, 2017.
Prior Publication US 2022/0052736 A1, Feb. 17, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. H04B 7/06 (2006.01); H04B 7/0452 (2017.01); H04B 17/336 (2015.01); H04L 5/00 (2006.01); H04W 24/08 (2009.01)
CPC H04B 7/0626 (2013.01) [H04B 7/0452 (2013.01); H04B 17/336 (2015.01); H04L 5/0035 (2013.01); H04L 5/0051 (2013.01); H04W 24/08 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A method implemented by a host computer configured to operate in a communication system including a base station and a user equipment (U E), the method comprising:
at the host computer, providing user data associated with the UE; and
at the host computer, initiating a transmission carrying the user data to the UE via a cellular network comprising the base station, wherein the base station:
sends, to the UE, a semi-static indication of a Channel State Information, CSI, reporting setting comprising one or more sets of aperiodic Non-Zero Power, NZP, Channel State Information Reference Signal, CSI-RS, resources for channel measurement, wherein each of the one or more sets of aperiodic NZP CSI-RS resources contains a single aperiodic NZP CSI-RS resource with precoded CSI-RS port(s), and one or more sets of aperiodic NZP CSI-RS resources for interference measurement, wherein each of the one or more sets of aperiodic NZP CSI-RS resources for interference measurement contain one or more NZP CSI-RS resources and each CSI-RS port in the one or more NZP CSI-RS resources for interference measurements corresponds to a Multiple User Multiple Input Multiple Output, MU-MIMO, interference layer associated with a co-scheduled UE;
sends, to the UE, a dynamic indication requesting a CSI report according to the CSI reporting setting and a first set of aperiodic NZP CSI-RS resources from the one or more sets of aperiodic NZP CSI-RS resources for channel measurement and a second set of aperiodic NZP CSI-RS resources from the one or more sets of aperiodic NZP CSI-RS resources for interference measurement; and
receives, from the UE, a CSI report comprising a rank and a Channel Quality Indicator, CQI.