The invention concerns a device for controlling the transfer of signals by a first communication device (20) to a second communication device (10) through a wireless network (15), the second communication device having at least N antennas, the first communication device having at least Mk antennas. The device for controlling the transfer is included in the second communication device and comprises means for determining a weighting vector vk, the weighting vector vk being composed of Mk elements, each element of the weighting vector vk being expected to weight the signals transferred by the first communication device through an antenna of the first communication device, means for determining information related to the determined weighting vector vk and means for transferring to the first communication device at least a signal comprising or being modified by the information related to the determined weighting vector vk. The invention concerns also the corresponding method.