Patent ID: 11901995
Assignee: COMMSCOPE TECHNOLOGIES LLC
Field: Telecommunications (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A system comprising:
a distributed unit; and
a plurality of radio units to wirelessly transmit and receive radio frequency signals to and from user equipment using a wireless interface, each of the radio units associated with a respective set of antennas;
wherein the distributed unit is communicatively coupled to the plurality of radio units;
wherein the distributed unit is configured to do the following in order to determine a composite precoder for transmitting to a UE using a group of one or more of the radio units:
for each of a plurality of subsets of the radio units, transmit separate reference signals from the different antennas of only the radio units included in that sub set;
receive subset-specific preferred precoder index reports from the UE for at least each subset that includes one or more radio units included in the group;
determine the composite precoder for the UE using at least some of the subset-specific preferred precoder index reports received from the UE; and
use the composite precoder for transmitting to the UE using the one or more radio units included in the group; and

wherein each of the subsets includes less than all of the radio units.