SELECTION OF TRAMSMISSION MODE

摘要

The invention discloses a method (500) for a cellular system (100), in which communication is carried out between a controlling station (105) of a cell (110) and a number of users (140, 150) in said cell, and the controlling station (105) is equipped with a plurality of antennas (120,130). The communication can alter between a first and a second mode, and the users (140, 150) in the cell provide the controlling station with feedback information (CQI) regarding their reception quality. The controlling station (105) alters between said first and second modes of communication as a result of the reliability of the feedback information from the users (140, 150) in the cell (110), so that if the reliability is above a first threshold, the first mode is used, and if the reliability is equal to or below said first threshold, the second mode is used.