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Paper Abstract and Keywords
Presentation 2026-05-14 15:00
UAV Trajectory Planning Based on Centroids of Ground Device Positions for SAGIN
Hiroyuki Nishikawa, Tomotaka Kimura, Jun Cheng (Doshisha Univ.) CQ2026-1
Abstract (in Japanese) (See Japanese page) 
(in English) Space--Air--Ground Integrated Network (SAGIN) enable Unmanned Aerial Vehicle (UAV)-assisted edge computing for large-scale Internet of Things systems. Although the joint optimization of UAV trajectories and communication resources improves energy efficiency, conventional iterative methods suffer from high computational complexity, limiting their scalability. This paper proposes a computationally efficient UAV flight path design method for SAGINs that exploits the geometric characteristics of the ground device distributions. A global visiting order is first determined using a Traveling Salesman Problem heuristic. Spatially adjacent devices are then grouped to form triangular regions, and their geometric centroids are used as intermediate waypoints. By guiding the UAV through these centroids, the proposed method enables communication with multiple nearby devices while avoiding excessive travel distances. Resource allocation is subsequently optimized under the predetermined trajectory using block coordinate descent. Simulation results show that the proposed method achieves near-optimal energy performance with significantly lower computational complexity, demonstrating its scalability for SAGIN-based UAV edge computing.
Keyword (in Japanese) (See Japanese page) 
(in English) SAGIN / UAV Trajectory Optimization / Energy-Efficient Edge Computing / / / / /  
Reference Info. IEICE Tech. Rep., vol. 126, no. 20, CQ2026-1, pp. 1-6, May 2026.
Paper # CQ2026-1 
Date of Issue 2026-05-07 (CQ) 
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 CQ2026-1

Conference Information
Committee CQ CS SAT  
Conference Date 2026-05-14 - 2026-05-15 
Place (in Japanese) (See Japanese page) 
Place (in English) Kushiro Chamber of Commerce & Industry 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To CQ 
Conference Code 2026-05-CQ-CS-SAT 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) UAV Trajectory Planning Based on Centroids of Ground Device Positions for SAGIN 
Sub Title (in English)  
Keyword(1) SAGIN  
Keyword(2) UAV Trajectory Optimization  
Keyword(3) Energy-Efficient Edge Computing  
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1st Author's Name Hiroyuki Nishikawa  
1st Author's Affiliation Doshisha University (Doshisha Univ.)
2nd Author's Name Tomotaka Kimura  
2nd Author's Affiliation Doshisha University (Doshisha Univ.)
3rd Author's Name Jun Cheng  
3rd Author's Affiliation Doshisha University (Doshisha Univ.)
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Speaker Author-1 
Date Time 2026-05-14 15:00:00 
Presentation Time 25 minutes 
Registration for CQ 
Paper # CQ2026-1 
Volume (vol) vol.126 
Number (no) no.20 
Page pp.1-6 
#Pages 6 
Date of Issue 2026-05-07 (CQ) 

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