The invention relates to a process for acquiring the parameters of a mobile radio network (3), whereby regular subscriber terminal devices (1) perform the acquisition without the use of additional external devices (GPS receiver, storage and processing module, notebook . . . ) being necessary. The acquisition of characteristic data can be configured dynamically by the mobile radio system (3) and is preferably performed every time that the user determines a position in any case (when using Location Based Services) or the subscriber terminal device (1) reaches a defined range (4) of the mobile radio network (3), whereby the definition of this range (4) is based either on network-standard field identifiers (Cell ID, LA, RA, URAI TA) or was defined by an open polygon of coordinates. The acquired data are transferred to an acquisition, analysis and processing unit (2).