Method for controlling the weighting of a data signal in the at least two antenna elements of a radio connection unit, radio connection unit, module and communications system

Method for controlling the weighting of a data signal in the at least two antenna elements of a first radio connection unit of a radio communications system, which data signal is to be distributed to at least two beams for parallel transmission of the data signal in at least two at least partly different streams to a second radio connection unit with at least one antenna element, the beams being formed by weighting the data signal in the antenna elements with a set of weights for each beam, the method comprising:

• determining in the second radio connection unit a weight information enabling the first radio connection unit to determine the sets of weights for at least two suitable beams for transmission of a data signal from the first radio connection unit to the second radio connection unit;
• evaluating in the second radio connection unit the stationary structure of received channels for determining data rates to be used for each of the at least two suitable beams;
• transmitting the determined weight information and the determined data rates to the first radio connection unit;
• and
• distributing the data signal in the first radio connection unit to at least two sets of weights determined from the received weight information and transmitting the data signals simultaneously via the at least two formed beams with the determined data rates.