CONTENTS

Annex 1 - Methodology for interference evaluation from systems in the  FS using HAPS to FWA systems (P-MP) in the bands 27.5-28.35 GHz and 31-31.3 GHz
1 Introduction
2 Calculation methodology of interference from HAPS-based system to FWA system (P‑MP)
        2.1 Interference from HAPS airship to FWA station
        2.2 Interference from HAPS ground station to FWA station
3 Assumptions for interference evaluation
        3.1 HAPS system
        3.2 FWA system with P-MP operation
4 Examples of calculation result in the case of FWA system with P-MP operation
        4.1 Interference from HAPS airship to FWA system
                  4.1.1 Interference from HAPS airship to FWA base station
                  4.1.2 Interference from HAPS airship to FWA subscriber station
        4.2 Interference from HAPS ground station to FWA system
                  4.2.1 Interference from HAPS ground station to FWA base station
                  4.2.2 Interference from HAPS ground station to FWA subscriber station
5 Summary
Annex 2 - Methodology for interference evaluation from systems in the FS using HAPS to FWA systems (P-P) in the bands 27.5-28.35 GHz and 31-31.3 GHz
1 Introduction
2 Calculation methodology of interference from HAPS-based system to FWA system (P‑P)
3 Assumptions for interference evaluation
        3.1 HAPS system
        3.2 FWA system with P-P operation
4 Examples of calculation results in the case of FWA system with P-P operation
        4.1 Interference from HAPS airship to FWA system
        4.2 Interference from HAPS ground station to FWA system
5 Summary
Appendix 1 to Annexes 1 and 2 - Propagation attenuation due to atmospheric gases in the slant path  between HAPS airships and ground stations in the bands 27.5-28.35 GHz and 31-31.3 GHz
1 Frequency band 27.5-28.35 GHz
2 Frequency band 31-31.3 GHz
Appendix 2 to Annexes 1 and 2 - Parameters of FWA system for sharing study
1 FWA system with P-MP operation
2 FWA system with P-P operation
Annex 3 - Methodology for interference evaluation using a stochastic approach from a HAPS to stations of the FWA systems in the 27.5-28.35 GHz band
1 Introduction
2 Simulation model
        2.1 Calculation methodology
                  2.1.1 HAPS downlink
                  2.1.2 FWA subscriber station
                  2.1.3 FWA base station
        2.2 HAPS system
        2.3 FWA subscriber station
                  2.3.1 Subscriber station parameters
                  2.3.2 Deployment statistics
        2.4 FWA base station
3 Results of calculation
 4     Summary