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Paper Abstract and Keywords
Presentation 2026-03-06 11:35
Evaluation of IEEE 802.11ah Communication Characteristics in Urban Areas and its Application to Multi-rate Video Communication
Tatsuya Fujii (IPUT), Hiroki Mamiya (Comota) IN2025-93
Abstract (in Japanese) (See Japanese page) 
(in English) IEEE 802.11ah is expected to be a promising technology for IoT applications due to its ability to easily build IP communication networks over a wide communication area. Its application in suburban and mountainous areas is currently being considered. However, due to carrier sensing interference from other wireless devices and a transmission time limit of 10% per hour, special consideration is required for its use in continuous communications such as video. Utilizing 802.11ah in urban areas raises concerns about reduced transmission throughput due to the presence of other similar devices and LPWA communications using the same 920 MHz band. In this paper, we investigate the communication distance and the characteristics of two 802.11ah communication devices in relation to the communication time limit, using central Tokyo as an example, in preparation for the application of 802.11ah to video communications. We also measure the temporal fluctuations in communication conditions and the impact on throughput. To enable continuous video transmission in this environment, we constructed a video streaming environment incorporating MPEG-DASH variable bit rate (ABR) and confirmed that video transmission was possible at speeds of 400 Kbps even in high-noise environments.
Keyword (in Japanese) (See Japanese page) 
(in English) 802.11ah / 920MHz-band LPWA / Video transmission / Network quality / MPEG-DASH / / /  
Reference Info. IEICE Tech. Rep., vol. 125, no. 386, IN2025-93, pp. 186-191, March 2026.
Paper # IN2025-93 
Date of Issue 2026-02-25 (IN) 
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 IN2025-93

Conference Information
Committee IN NS  
Conference Date 2026-03-04 - 2026-03-06 
Place (in Japanese) (See Japanese page) 
Place (in English) Okinawa-Ken Shichoson Jichi Kaikan 
Topics (in Japanese) (See Japanese page) 
Topics (in English) General 
Paper Information
Registration To IN 
Conference Code 2026-03-IN-NS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Evaluation of IEEE 802.11ah Communication Characteristics in Urban Areas and its Application to Multi-rate Video Communication 
Sub Title (in English)  
Keyword(1) 802.11ah  
Keyword(2) 920MHz-band LPWA  
Keyword(3) Video transmission  
Keyword(4) Network quality  
Keyword(5) MPEG-DASH  
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Keyword(7)  
Keyword(8)  
1st Author's Name Tatsuya Fujii  
1st Author's Affiliation International Professional University of Technology in Tokyo (IPUT)
2nd Author's Name Hiroki Mamiya  
2nd Author's Affiliation Comota Co., Ltd. (Comota)
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Speaker Author-1 
Date Time 2026-03-06 11:35:00 
Presentation Time 25 minutes 
Registration for IN 
Paper # IN2025-93 
Volume (vol) vol.125 
Number (no) no.386 
Page pp.186-191 
#Pages 6 
Date of Issue 2026-02-25 (IN) 

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