Method of improving quality of radio connection

The invention relates to a method for improving the quality of a radio connection (170) in a cellular radio network. It is important for the invention that the cellular radio network include a base station system (126) and a subscriber terminal (150). A bidirectional radio connection (170) using a directional antenna lobe (304) is provided between the base station system (126) and the subscriber terminal (150). In the method, an angle of incidence (302) of the directional antenna lobe (304) of the base station system (126) is formed on the basis of a received radio signal (170A) transmitted by the subscriber terminal (150). The base station system (126) sends a radio signal (170B) to the subscriber terminal (150) in the direction provided by a departure angle (308), which is formed on the basis of the angle of incidence (302). In accordance with the invention, a relationship is formed for the imbalance between the traffic volumes in the downlink and uplink directions. The processing of the directional antenna lobe (304) of the radio signal (170A, 170B) is controlled on the basis of the relationship formed.