Policy on Intellectual Property Right (IPR)
1 Introduction
2 Overall considerations for sharing studies
2.1 HAPS gateway links-FSS
sharing
2.2 HAPS gateway links-FS
sharing
2.3 HAPS gateway links-MS
sharing
2.4 HAPS gateway
links-passive sensor sharing
2.5 HAPS gateway
links-radio astronomy sharing
3 System characteristics of HAPS
gateway links in the fixed service
4 Sharing studies
Annex 1 Interference modelling between HAPS gateway links in the fixed service and the fixed-satellite service in the 5 850-7
075 MHz band
1 Introduction
2 FSS Earth terminal
characteristics
3 Interference from a
transmitting FSS earth station into a receiving HAPS gateway station – Specific
case
4 Interference from a
transmitting FSS earth station into a receiving HAPS airborne station – General
case
4.1 Case a: FSS earth
station main beam into HAPS airborne antenna main beam interference
4.2 Case b: FSS earth
station beam side lobe into HAPS airborne antenna main beam interference
4.3 Case c: FSS earth
station main beam into HAPS airborne antenna side-lobe interference
4.4 Case d: FSS earth
station antenna side lobe into HAPS airborne antenna side‑lobe
interference
5 Interference from HAPS gateway
links in the FS into the FSS uplink
5.1 Derivation of
protection levels for geostationary satellite receivers
5.1.1 Formula
for epfd (equivalent power flux-density) levels
5.1.2 Parameters
of representative geostationary uplinks
5.1.3 Permissible
levels of interference
5.1.4 Maximum
uplink epfd levels at the geostationary orbit at 6 GHz
5.2 Derivation of possible
maximum e.i.r.p. levels towards the geostationary arc
5.3 Region around the
geostationary arc where such levels should apply
6 Conclusion
7 Interference from HAPS gateway
links in the FS into the FSS in the RR Appendix 30B Plan Allotment
7.1 Characteristics of FSS
networks (RR Appendix 30B)
7.2 Interference scenarios
and assumptions
7.3 Result of interference analysis
7.3.1 Scenario 1
7.3.2 Scenario 2
7.4 Conclusion
8 Interference from HAPS into
non-geostationary FSS systems
8.1 Technical
characteristics of the non-GSO system
8.2 Interference analysis
8.2.1 Results
8.3 Conclusion
9 Interference from HAPS into
non-GSO MSS feeder links in the FSS
9.1 Interference
situations
9.2 Analysis of
interference evaluation
9.3 Conclusion
Appendix to Annex 1
Annex 2 Interference
modelling between HAPS gateway links and the conventional types of fixed
service systems in the 5 850-7 075 MHz band
1 Introduction
2 Consideration of the PFD limits
required to protect point-to-point fixed service receivers in one
administration from interference from high altitude platform gateway systems
operating in another administration in the frequency range 5 850-7 025 MHz
2.1 Determination of an
acceptable PFD limit at an FS receiver
2.2 Determination of an
acceptable PFD limit at an administration border
2.3 Conclusion
3 Interference modelling between
HAPS gateway links and conventional fixed wireless
system (FWS) links in the 5 850-7 075 MHz band
3.1 System characteristics
and protection criteria
3.2 Interference analysis
3.2.1 Interference
from HAPS gateway (uplink) into conventional FWS
3.2.2 Interference
from HAPS airborne platform (downlink) into FWS
3.3 Conclusion
Annex 3 Interference modelling between HAPS gateway links in
the fixed service and the mobile service in the 5 850-7 075 MHz band
1 Introduction
2 System characteristics
2.1 HAPS characteristics
2.2 MS Characteristics
3 Interference analysis
3.1 Interference from the
HAPS airborne platform into MS
3.2 Interference from the
HAPS gateway into MS
4 Conclusion
Annex 4 Interference
modelling between HAPS gateway links and passive microwave sensors in the 6
425-7 075 MHz band
1 Background
2 Specific EESS (passive)
considerations
3 Interference modelling
4 Analysis methodology
4.1 HAPS gateway station – EESS (passive) analysis
4.1.1 Result of
static simulation
4.1.2 Result of
dynamic simulation
4.2 HAPS platform – EESS
(passive) analysis
4.2.1 HAPS
airborne platform
5 Conclusion
Annex 5 Interference
modelling between HAPS gateway links and radio astronomy service (RAS) in the 5
850-7 075 MHz band
1 Background
2 Specific HAPS considerations
3 Specific RAS considerations
4 Interference modelling
5 Analysis methodology
5.1 HAPS gateway station (uplink) – RAS analysis
5.1.1 Aggregation
of ground stations
5.2 HAPS platform – RAS
analysis
6 Conclusion