A modeling process for the deployment of the radio coverage of a cellular radiotelephony network, using a computer system that memorizes data representing reference coverage maps of the network, data representing geographic maps broken down into area delimited by a contour, called geomarketing data, data representing at least on type of radio station, data representing a sufficient coverage threshold and data representing a coverage threshold of each contour, the modeling process comprising selecting a geographic map, retrieving geomarketing data and data representing the corresponding reference coverage map, producing a regular grid with a determined spacing showing potential sites representing radio electric stations to be added inside the contour, using calculation functions of the computer and selecting or eliminating potential sites as a function of at least one criterion related to their usefulness.