ITU Regulations for Ka-band Satellite Networks

Abstract

This paper gives an overview of the ITU regulations that apply to Ka-band satellite networks that operate in the geostationary satellite orbit (GSO) or a non-geostationary satellite orbit (non-GSO). In the last 5 years many satellite operators have launched or are planning to launch so-called High Throughput Satellites (HTS) operating in the Ka-band. Characteristics and examples of HTS will be given. Most HTS typically file for 3.5 GHz bandwidth in the following Ka-bands: 27.5 – 31 GHz (uplink) 17.7 – 21.2 GHz (downlink) These bands are subject to several regulatory provisions which restrict the bandwidth available. Using a simplified view of the Ka-band portion of the Table of Frequency Allocations the paper will explain the ITU regulations as they apply in each of the cases: • Bands identified for High-Density FSS (HDFSS) • Bands used by many administrations for FS including LMDS • Bands where GSO and non-GSO satellite networks have equal rights • Bands where equivalent pfd (epfd) applies • Military bands Some WRC-12 results are also reviewed including new BSS Ka-band allocations in the downlink band 21.4 – 22 GHz, clarification of the concept of “bringing into use” and what the Radio Regulations Board considers to be “reliable” information in case of a dispute.