A method of adapting a radio network model to conditions of a real radio network consists of the following steps: defining different measuring positions; carrying out measurements of variables at the different measuring positions, thereby generating measured data; providing position-dependent modelling values, using the measured data for the modelling values from the real radio network obtained at the measuring positions; setting a fine grid in a radio cell, defining small area portions, wherein one or more of the modelling values is attributed to each area portion by the radio network model. Mathematical operations are then established for modifying the modelling values of all area portions of the fine grid by adapting the modelling values to the measured data. In this manner, the mathematical operations are for each area portion and directly dependent on the measured data and the position of the respective area portions.