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Paper Abstract and Keywords
Presentation 2025-11-20 11:15
Evaluation of Outdoor Wireless Transmission Characteristics for VHF-band Wi-SUN System based on IEEE 802.15.4 SUN OFDM
Goro Kawabuchi, Lim Jaeseok, Hiroko Masaki, Hiroshi Harada (Kyoto Univ.) SRW2025-31
Abstract (in Japanese) (See Japanese page) 
(in English) Wireless Smart Utility Network (Wi-SUN) is an international standard for wireless communication technologies targeting the Internet of Things (IoT), providing a framework that enables low-power, wide-area connectivity. It has already been deployed in over 100 million devices worldwide, particularly in applications such as smart metering. Although the transmission distance between radio devices is typically several hundred meters, large-scale mesh networks can be realized through multi-hop communication. Future deployments are expected across diverse application domains, with increasing demand for longer-distance and higher-speed communication between radios. To meet these requirements, Wi-SUN operation in the Very High Frequency (VHF) band has been institutionalized. However, the outdoor transmission characteristics of SUN FSK and SUN OFDM, currently adopted for Wi-SUN in the VHF band, had been evaluated only with measurement equipment, and validation using actual devices had not yet been conducted. In this study, we developed a SUN OFDM transmission device capable of operating in the VHF band and suitable for commercial use, and conducted outdoor transmission experiments in mobile environments. As a result, transmission distances up to about 10 km were successfully achieved.
Keyword (in Japanese) (See Japanese page) 
(in English) IEEE 802.15.4 / VHF / IoT / mobile communication / Wi-SUN / / /  
Reference Info. IEICE Tech. Rep., vol. 125, no. 256, SRW2025-31, pp. 21-26, Nov. 2025.
Paper # SRW2025-31 
Date of Issue 2025-11-13 (SRW) 
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 SRW2025-31

Conference Information
Committee SRW  
Conference Date 2025-11-20 - 2025-11-21 
Place (in Japanese) (See Japanese page) 
Place (in English) Kyoto Univ. Rakuyu-Kaikan Bldg. 2F Lecture room 
Topics (in Japanese) (See Japanese page) 
Topics (in English) IoT Workshop (General and Poster presentations regarding IoT techniques) 
Paper Information
Registration To SRW 
Conference Code 2025-11-SRW 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Evaluation of Outdoor Wireless Transmission Characteristics for VHF-band Wi-SUN System based on IEEE 802.15.4 SUN OFDM 
Sub Title (in English)  
Keyword(1) IEEE 802.15.4  
Keyword(2) VHF  
Keyword(3) IoT  
Keyword(4) mobile communication  
Keyword(5) Wi-SUN  
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Keyword(7)  
Keyword(8)  
1st Author's Name Goro Kawabuchi  
1st Author's Affiliation Kyoto University (Kyoto Univ.)
2nd Author's Name Lim Jaeseok  
2nd Author's Affiliation Kyoto University (Kyoto Univ.)
3rd Author's Name Hiroko Masaki  
3rd Author's Affiliation Kyoto University (Kyoto Univ.)
4th Author's Name Hiroshi Harada  
4th Author's Affiliation Kyoto University (Kyoto Univ.)
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Speaker Author-1 
Date Time 2025-11-20 11:15:00 
Presentation Time 25 minutes 
Registration for SRW 
Paper # SRW2025-31 
Volume (vol) vol.125 
Number (no) no.256 
Page pp.21-26 
#Pages 6 
Date of Issue 2025-11-13 (SRW) 

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