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Paper Abstract and Keywords
Presentation 2026-06-19 10:35
Inter-Operator Spectrum Sharing for Dead Zone Elimination via Beamforming and Transmission Power Reduction in Local 5G
Masaki Hattori, Takeo Fujii (UEC) RCS2026-77
Abstract (in Japanese) (See Japanese page) 
(in English) This paper proposes a cooperative inter-operator resource control scheme for local 5G (L5G) networks combining null-steering beamforming and transmission power control. The scheduling period is divided into dedicated and shared portions, with the shared portion further split into two states based on the transmission power of one operator, suppressing mutual interference while expanding the spectrum-sharing area. Resource allocation parameters are dynamically optimized using exponentially weighted moving average (EWMA)-based traffic demand prediction. Simulations show that the proposed scheme achieves a 37.5% improvement in the 95th-percentile user satisfaction ratio over both the static and beamforming-only baselines, closely approaching the theoretical upper bound.
Keyword (in Japanese) (See Japanese page) 
(in English) Local 5G / Spectrum Sharing / Resource Allocation / Beamforming / Transmission Power Control / Mutual Interference / /  
Reference Info. IEICE Tech. Rep., vol. 126, no. 72, RCS2026-77, pp. 291-296, June 2026.
Paper # RCS2026-77 
Date of Issue 2026-06-10 (RCS) 
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 RCS2026-77

Conference Information
Committee RCS  
Conference Date 2026-06-17 - 2026-06-19 
Place (in Japanese) (See Japanese page) 
Place (in English) The Ohama Nobumoto Memorial Hall 
Topics (in Japanese) (See Japanese page) 
Topics (in English) First Presentation in IEICE Technical Committee, Resource Control, Scheduling, Wireless Communications, etc. 
Paper Information
Registration To RCS 
Conference Code 2026-06-RCS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Inter-Operator Spectrum Sharing for Dead Zone Elimination via Beamforming and Transmission Power Reduction in Local 5G 
Sub Title (in English)  
Keyword(1) Local 5G  
Keyword(2) Spectrum Sharing  
Keyword(3) Resource Allocation  
Keyword(4) Beamforming  
Keyword(5) Transmission Power Control  
Keyword(6) Mutual Interference  
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Keyword(8)  
1st Author's Name Masaki Hattori  
1st Author's Affiliation The University of Electro-Communications (UEC)
2nd Author's Name Takeo Fujii  
2nd Author's Affiliation The University of Electro-Communications (UEC)
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Speaker Author-1 
Date Time 2026-06-19 10:35:00 
Presentation Time 10 minutes 
Registration for RCS 
Paper # RCS2026-77 
Volume (vol) vol.126 
Number (no) no.72 
Page pp.291-296 
#Pages 6 
Date of Issue 2026-06-10 (RCS) 

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