1. A method for generating a space-related traffic database for a radio network comprising a plurality of radio cells, comprising: assigning each of said plurality of radio cells to a group of radio cells, subdividing a region to be planned into area elements by a grid, allocating to each area element a respective assignment probability with respect to each of radio cells serving that area element and also a land usage class from amongst a finite group of land usage classes, generating the traffic database by performing a minimization process, the minimization process comprising: minimizing the distance between the measured traffic of a given radio cell and the traffic to be predicted of the given radio cell for each radio cell, where the traffic that is to be predicted of a respective radio cell being set equal to a sum of area elements that are weighted with land- usage-class-specific and group-specific coefficients, wherein the area elements assigned to the respective radio cell for a respective land usage class and for a respective group of radio cells result from the assignment probabilities of the area elements to the respective group of radio cells, redetermining the coefficients by the minimization process, and assigning the coefficients to the corresponding radio cell.