A method for assessing the interference impact of a specific base station includes causing an interfering transmitter in the network to transmit data at substantially different power levels for each of at least two predefined time-frequency-resources, instructing the user equipment to measure and report to the serving base station at least one parameter associated with reception of the downlink signals that is indicative of an effect of the interfering signals and processing the results in order to assess the effect of the interfering signals.