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