The term air interface , also known as radio interface , describes the transmission of data by means of electromagnetic waves , ie apparently through the medium "air". In fact, these waves also propagate in a vacuum. In English, over-the-air ( OTA ) is used as a synonym for “wireless” (in German: cordless ). The “air interface” is particularly characterized by the fact that radio (or infrared) transmission takes place.
Transmission methods that are not medium-bound include:
- Update of firmware for smartphones ( FOTA = Firmware Over-The-Air)
- WIRELESS INTERNET ACCESS
- GSM , UMTS and LTE ( GERAN , UTRAN and E-UTRAN act as air interfaces)
- Broadcasting (in particular aerial and satellite television and radio )
- Volker Jung, Hans-Jürgen Warnecke (Hrsg.): Handbook for telecommunications. 2nd edition, Springer Verlag, Berlin 2002, ISBN 978-3-642-62736-1 .
- Martin Werner: communications engineering. An introduction to all courses, 7th edition, Vieweg + Teubner, Wiesbaden 2010, ISBN 978-3-8348-0905-6 .
- Christof Linde, Jan Tino Demel: Digital radio. Publishing group Hüthing Jehle Rehm GmbH, ISBN 978-3-609-68436-9 .