ITU's Regulatory Framework, Technical Studies in ITU-R, and Future Activities in Relation to High-Altitude-Platform Stations (HAPS)

摘要

As early as in 1996, the ITU-R Study Groups and the Radiocommunication Bureau [1-3], as well as the Radio Regulations Board in 1997 and the World Radiocommunication Conference 1997 (WRC-97), started considerations of a newly emerging technology: high-altitude-platform stations (HAPS), or stratospheric stations, as they were mainly called in the early studies. This article presents an overview of the developments during the study periods in ITU-R and the phases between WRCs, including the WRC process. In particular, it presents the radio-regulatory aspects as they are reflected in the ITU Radio Regulations and in Conference Resolutions. The various ITU-R Recommendations developed during the last and current study periods dealing with HAPS are also summarized. Since developments on HAPS and associated frequency-sharing studies are still going on, an overview of the current situation in preparation for agenda item 1.20 of WRC-12 (consider the results of ITU-R studies and spectrum identification for gateway links for HAPS in the range 5850-7075 MHz in order to support operations in the fixed and mobile services, in accordance with Resolution 734 (Rev.WRC-07)) is also provided.