CONTENTS

Annex 1 - A methodology for interference evaluation from the downlink of the FS using HAPS to the uplink of the FSS using GSO satellites within the
        band 27.5-28.35 GHz
 1     Introduction      
 2     A methodology for interference evaluation
        2.1     Interference from a HAPS system  
        2.2     Interference from multiple HAPS systems   
        2.3     Downlink power control    
        2.4     Input parameters    
Appendix 1  to Annex 1 - An example of the application of the methodology of Annex 1    
 1     Interference model           
 2     HAPS characteristics       
 3     GSO satellite characteristics         
 4     Calculation results
 Annex 2 - A methodology for the calculation of the e.i.r.p. transmissions from HAPS in the HAPS-to-ground direction within the band 27.5-28.35 GHz that
        would cause a given increase in the I/N of receivers of FSS geostationary satellites    
 1     Introduction      
 2     Description of the method
 3     Interference levels from typical HAPS systems     
Appendix1  to Annex 2 - An example of the application of the methodology of Annex 2    
 1     Introduction      
 2     Interference to 2� beamwidth FSS hub station beams       
 3     Interference to 0.3� beamwidth FSS small user terminal beams     
 4     Interference levels from typical HAPS systems