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Paper Abstract and Keywords
Presentation 2026-07-10 10:00
[Invited Talk] A Study on Indoor Positioning Using Low Power Wide Area Network and Movable Antennas Part-II
Haruto Morokuma, Zhuoran Li, Osamu Muta (Kyushu Univ.), Naohiro Ikeda (Tokyu), Takamasa Kitanouma (Phindex) CS2026-20
Abstract (in Japanese) (See Japanese page) 
(in English) The adoption of Information and Communication Technology (ICT) at construction sites has increased the demand for wireless localization to ensure worker safety and equipment management. However, indoor localization accuracy using received signal strength (RSS) is degraded by signal fluctuations caused by reflections and obstructions.
Although moving-average processing is known as an effective error mitigation technique, its effectiveness is limited when the target worker or equipment remains stationary. To address this issue, a localization scheme using movable antennas has been proposed, in which the antenna position is mechanically varied to improve localization accuracy in indoor environments. This presentation introduces a recently proposed indoor two-dimensional localization scheme using a 920 MHz LoRaWAN system and movable antennas. In the proposed scheme, a rotating antenna is installed at an anchor node, and localization is performed using either the moving average or the maximum value of the RSS measurements obtained during antenna rotation. Experimental results obtained in an indoor environment demonstrate that the proposed scheme can improve localization accuracy even when the target remains stationary.
Keyword (in Japanese) (See Japanese page) 
(in English) LPWAN / LoRaWAN / positioning / Received-Signal-Strength (RSS) / movable antenna / / /  
Reference Info. IEICE Tech. Rep., vol. 126, no. 95, CS2026-20, pp. 35-40, July 2026.
Paper # CS2026-20 
Date of Issue 2026-07-02 (CS) 
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 CS2026-20

Conference Information
Committee CS  
Conference Date 2026-07-09 - 2026-07-10 
Place (in Japanese) (See Japanese page) 
Place (in English)  
Topics (in Japanese) (See Japanese page) 
Topics (in English) Semantic communications, Access networks, Underwater and underground communications, IoT, Cognitive radio, Coding scheme, etc. 
Paper Information
Registration To CS 
Conference Code 2026-07-CS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A Study on Indoor Positioning Using Low Power Wide Area Network and Movable Antennas Part-II 
Sub Title (in English)  
Keyword(1) LPWAN  
Keyword(2) LoRaWAN  
Keyword(3) positioning  
Keyword(4) Received-Signal-Strength (RSS)  
Keyword(5) movable antenna  
Keyword(6)  
Keyword(7)  
Keyword(8)  
1st Author's Name Haruto Morokuma  
1st Author's Affiliation Kyushu University (Kyushu Univ.)
2nd Author's Name Zhuoran Li  
2nd Author's Affiliation Kyushu University (Kyushu Univ.)
3rd Author's Name Osamu Muta  
3rd Author's Affiliation Kyushu University (Kyushu Univ.)
4th Author's Name Naohiro Ikeda  
4th Author's Affiliation Tokyu Construction (Tokyu)
5th Author's Name Takamasa Kitanouma  
5th Author's Affiliation Phindex Technologies (Phindex)
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Speaker Author-1 
Date Time 2026-07-10 10:00:00 
Presentation Time 30 minutes 
Registration for CS 
Paper # CS2026-20 
Volume (vol) vol.126 
Number (no) no.95 
Page pp.35-40 
#Pages 6 
Date of Issue 2026-07-02 (CS) 

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