There is disclosed a method of obtaining channel state information, CSI, with respect to a plurality of coordinated antennas. The method is performed in a control node. The Start method comprises transmitting, by said plurality of antennas, according to different CSI-RS transmit configurations and at different points in time, channel state information reference symbols, CSI-RS. At a first time instance a CSI report from at least one user equipment, UE, is received. Based on the CSI report being received at said first time instance, said received CSI report is associated with a specific CSI-RS transmit configuration of the different CSI-RS transmit configurations. A control node and a computer program are also disclosed.