Patent ID: 11949481
Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
Field: Telecommunications (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
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.