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Paper Abstract and Keywords
Presentation 2026-03-18 13:30
A Study on Optimization of Base Station Beam Tilt Angles Using Quantum Annealing
Ken Masuda, Tetsuro Imai (TDU), Wataru Yamada, Minoru Inomata (NTT) AP2025-224
Abstract (in Japanese) (See Japanese page) 
(in English) In mobile communication systems that provide area coverage using a multi-cell architecture, optimizing the beam tilt angles of base station antennas is essential for improving spectrum utilization efficiency. However, when a large number of base stations are irregularly deployed, jointly optimizing the tilt angle of each base station becomes extremely challenging.
In this paper, we propose a Quadratic Unconstrained Binary Optimization (QUBO) model that enables the optimization of base station beam tilt angles via quantum annealing. Furthermore, the performance of the proposed QUBO model is evaluated using a regular hexagonal cell deployment model, for which the optimal solution is known.
Keyword (in Japanese) (See Japanese page) 
(in English) Mobile communication systems / Beam tilt angles / System optimization / Quantum annealing / / / /  
Reference Info. IEICE Tech. Rep., vol. 125, no. 419, AP2025-224, pp. 1-5, March 2026.
Paper # AP2025-224 
Date of Issue 2026-03-11 (AP) 
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 AP2025-224

Conference Information
Committee AP  
Conference Date 2026-03-18 - 2026-03-19 
Place (in Japanese) (See Japanese page) 
Place (in English) Matsumoto Chamber of Commerce and Industry 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Antennas and Propagation 
Paper Information
Registration To AP 
Conference Code 2026-03-AP 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A Study on Optimization of Base Station Beam Tilt Angles Using Quantum Annealing 
Sub Title (in English)  
Keyword(1) Mobile communication systems  
Keyword(2) Beam tilt angles  
Keyword(3) System optimization  
Keyword(4) Quantum annealing  
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1st Author's Name Ken Masuda  
1st Author's Affiliation Tokyo Denki University (TDU)
2nd Author's Name Tetsuro Imai  
2nd Author's Affiliation Tokyo Denki University (TDU)
3rd Author's Name Wataru Yamada  
3rd Author's Affiliation NTT Access Network Service Systems Laboratories (NTT)
4th Author's Name Minoru Inomata  
4th Author's Affiliation NTT Access Network Service Systems Laboratories (NTT)
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Speaker Author-1 
Date Time 2026-03-18 13:30:00 
Presentation Time 25 minutes 
Registration for AP 
Paper # AP2025-224 
Volume (vol) vol.125 
Number (no) no.419 
Page pp.1-5 
#Pages 5 
Date of Issue 2026-03-11 (AP) 

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