Radio Local Area Networks (RLANs) are intended to cover smaller geographic areas like homes, offices and to a certain extent buildings being adjacent to each other. Radio LANs are also known as Wireless LANs (WLANs) or as Wi-Fi™, where Wi-Fi™ is a registered trademark of the Wi-Fi Alliance.
A popular deployment of Radio LANs is providing broadband connectivity at public locations like airports, railway stations, conference centres and hotels. Even on trains and aboard aircraft Radio LANs are or will become available for providing network access.
Currently, the frequency bands 2,4 GHz and 5 GHz are mainly used by Radio LANs and mostly, the deployed technology is based on the IEEE 802.11 standards family.
The continuously increasing demand for faster transmission rates and the continued substitution of wired connections by wireless ones make it necessary to identify other frequency bands that offer sufficient capacities, e.g. the frequency band 60 GHz.