The disclosure relates to a device for controlling a plurality of antenna elements of an antenna array of a multi-input multi-output (MIMO) communication system, the device comprising: a communication handler configured to receive channel information from a first user equipment of a plurality of user equipments, the channel information indicating a communication channel quality of the first user equipment, and configured to receive quality of service (QoS) information indicating a QoS requirement for the first user equipment; and a controller configured to generate a plurality of weights for beamforming the plurality of antenna elements based on the channel information and based on the QoS information.