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Paper Abstract and Keywords
Presentation 2026-08-28 09:35
Early Commercialization and System Evolution for HAPS Direct-to-Mobile-Phone Service -- Evaluation of Dynamic Gateway Selection for Q-Band Feeder Links Considering Rain Attenuation and Switching Outages in Multi-HAPS/Multi-GW Networks --
Yuto Muroki, Takuya Miyashita, Yoshihisa Kishiyama (Space Compass) SAT2026-43
Abstract (in Japanese) (See Japanese page) 
(in English) For high-capacity communication using high-altitude platform stations (HAPS), stabilizing the Q-band feeder link (FL) between HAPS and ground gateway stations (GWs) is essential. Rain attenuation degrades the Q-band FL quality, and site diversity using multiple GWs is effective; however, GW contention and switching outages can reduce the effective throughput in multi-HAPS environments. This paper evaluates a GW selection method that determines the network-wide HAPS--GW assignment based on the instantaneous throughput and a switching penalty, comparing it with fixed-GW and distance-hysteresis schemes. Simulation results using rainfall observation data show that the method reduces the number of GW switches while maintaining the mean network effective throughput and lowering the rain attenuation of the selected FLs.
Keyword (in Japanese) (See Japanese page) 
(in English) HAPS / NTN / Q-band / feeder link / rain attenuation / site diversity / /  
Reference Info. IEICE Tech. Rep., vol. 126, no. 158, SAT2026-43, pp. 42-47, Aug. 2026.
Paper # SAT2026-43 
Date of Issue 2026-08-20 (SAT) 
ISSN Online edition: ISSN 2432-6380
Copyright
and
reproduction		 All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
Download PDF SAT2026-43

Conference Information
Committee SAT RCS  
Conference Date 2026-08-27 - 2026-08-28 
Place (in Japanese) (See Japanese page) 
Place (in English) BENEX Nagasaki Brick Hall 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Satellite Communications, Broadcasting, Forward Error Correction, Wireless Communications, etc. 
Paper Information
Registration To SAT 
Conference Code 2026-08-SAT-RCS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Early Commercialization and System Evolution for HAPS Direct-to-Mobile-Phone Service 
Sub Title (in English) Evaluation of Dynamic Gateway Selection for Q-Band Feeder Links Considering Rain Attenuation and Switching Outages in Multi-HAPS/Multi-GW Networks 
Keyword(1) HAPS  
Keyword(2) NTN  
Keyword(3) Q-band  
Keyword(4) feeder link  
Keyword(5) rain attenuation  
Keyword(6) site diversity  
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Keyword(8)  
1st Author's Name Yuto Muroki  
1st Author's Affiliation Space Compass Corporation (Space Compass)
2nd Author's Name Takuya Miyashita  
2nd Author's Affiliation Space Compass Corporation (Space Compass)
3rd Author's Name Yoshihisa Kishiyama  
3rd Author's Affiliation Space Compass Corporation (Space Compass)
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Speaker Author-1 
Date Time 2026-08-28 09:35:00 
Presentation Time 25 minutes 
Registration for SAT 
Paper # SAT2026-43 
Volume (vol) vol.126 
Number (no) no.158 
Page pp.42-47 
#Pages 6 
Date of Issue 2026-08-20 (SAT) 

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