Principles; network topologies and architectures; architecture, operation and maintenance of systems such as GSM, GPRS, UMTS, HSPA, LTE, TETRA, DECT, WLAN, WiMax and evolution from the first generation to the future fourth generation (4G). Further addressed topics: connection setup; handover protocols; access mechanisms; signalling; network dimensioning and planning; mobility; mobile services; security management, authentication; geostationary and low-earth orbit satellite networks; radio-frequency and infrared LANs; integration with terrestrial and satellite networks