HAPS

A high-altitude platform station (HAPS) ss a communications platform that is kept at an altitude of around 20-50 km above a specified, nominal fixed point relative to the Earth.

HAPS can be used for different purposes. HAPS can e.g. be used as a base station in the sky in a mobile network to get coverage in rural areas or as a platform for broadcasting. HAPS are also used as a relay for fixed radio links.

The operation of HAPS is currently restricted to bands at 2 GHz for mobile applications, 28 GHz (not on a global basis) and 47 GHz for fixed applications.