Statistics on joint site use by mobile communication sites (Source: as of 03 September 2013)
Subject to adherence to the relevant legal provisions, the planning and installation of a mobile radio network is the responsibility of the network's operator. To determine the sites for fixed mobile radio base stations, the operators use computer-based procedures which take into account the topographical conditions, development density and vegetation as well as anticipated customer numbers for each cell to be created (a cell is created by a base station).
Not every newly required cell (mobile communications site) results in a separate radio installation site. The mobile radio network operators often share the use of sites. The Federal Network Agency keeps track of such sites.