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Paper Abstract and Keywords
Presentation 2025-11-07 15:00
Relay Node Placement Evaluation in IEEE 802.11ah Mesh Networks for Application-Aware Communication
Hiromu Takasai, Yoshiko Sueda (Meisei Univ.), Arata Koike (Tokyo Kasei Univ.) CQ2025-72
Abstract (in Japanese) (See Japanese page) 
(in English) This study evaluates the impact of relay node placement and configuration on communication performance in an IoT mesh network using IEEE 802.11ah (Wi-Fi HaLow™) under real-world conditions. Measurements conducted in both indoor and outdoor environments confirmed that the use of relay nodes reduces throughput to approximately half due to the half-duplex communication, compared to direct communication between an access point and a client node without relay nodes. Furthermore, a comparison between configurations using two and three relay nodes revealed that the IEEE 802.11ah standard’s target of achieving at least 100 kbps is nearly met with two-node configurations, whereas three-node configurations fall below this threshold at longer distances. This study discusses practical communication ranges when relay nodes are employed and outlines future challenges. Additionally, insights gained from evaluating the feasibility of video transmission, which requires a throughput of at least 200kbps over extended distances, are presented.
Keyword (in Japanese) (See Japanese page) 
(in English) 802.11ah / Video Transmission / Network Quality / Relay node / Monitoring System / / /  
Reference Info. IEICE Tech. Rep., vol. 125, no. 228, CQ2025-72, pp. 52-57, Nov. 2025.
Paper # CQ2025-72 
Date of Issue 2025-10-30 (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 CQ2025-72

Conference Information
Committee CQ IEE-CMN ITE-BCT  
Conference Date 2025-11-06 - 2025-11-07 
Place (in Japanese) (See Japanese page) 
Place (in English) Tokimate 
Topics (in Japanese) (See Japanese page) 
Topics (in English) V2V/V2X, IoT/M2M, Traffic Measurement/Design/Control/
Paper Information
Registration To CQ 
Conference Code 2025-11-CQ-CMN-BCT 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Relay Node Placement Evaluation in IEEE 802.11ah Mesh Networks for Application-Aware Communication 
Sub Title (in English)  
Keyword(1) 802.11ah  
Keyword(2) Video Transmission  
Keyword(3) Network Quality  
Keyword(4) Relay node  
Keyword(5) Monitoring System  
Keyword(6)  
Keyword(7)  
Keyword(8)  
1st Author's Name Hiromu Takasai  
1st Author's Affiliation Meisei University (Meisei Univ.)
2nd Author's Name Yoshiko Sueda  
2nd Author's Affiliation Meisei University (Meisei Univ.)
3rd Author's Name Arata Koike  
3rd Author's Affiliation Tokyo Kasei University (Tokyo Kasei Univ.)
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Speaker Author-1 
Date Time 2025-11-07 15:00:00 
Presentation Time 25 minutes 
Registration for CQ 
Paper # CQ2025-72 
Volume (vol) vol.125 
Number (no) no.228 
Page pp.52-57 
#Pages 6 
Date of Issue 2025-10-30 (CQ) 

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