Annex 1
A methodology for co-channel interference evaluation to determine separation distance from a system using HAPS to a cellularsystem
to provide IMT-2000 service within the
boundary of an administration
1 Introduction
2 System model
2.1 HAPS IMT-2000
2.2 Propagation model
2.2.1 Simplified model of an
extended version of Hata’s model
2.2.2 Free space loss model
3 C/I analysis at a cellular mobile station and the
required C/I to determine the separation distance between HAPS
system and cellular system
3.1 C/I analysis at a cellular mobile station
3.2 The required C/I
to determine the separation distance
Annex
2 Example of calculation of separation
distance between a HAPS system and a cellular system to provide IMT-2000
service
1 Parameters for C/I
calculation
2 Calculation of
separation distance
Appendix 1
to Annex 1 Derivations of the
interference between a HAPS system and a cellular system
1 Interference to a
cellular mobile station
1.1 Interference from a
cellular base station
1.2 Interference from a
HAPS base station
Appendix 2
to Annex 1 Antenna radiation patterns
1 Reference radiation pattern used (Recommendation ITU-R M.1456)