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Paper Abstract and Keywords
Presentation 2026-04-23 10:00
[Encouragement Talk] Applicability Evaluation of Sidelink V2X Relay Transmission using UAV
Hideya So, Hikaru Shiraishi (Kogakuin Univ.) RCS2026-1
Abstract (in Japanese) (See Japanese page) 
(in English) Vehicle-to-Everything (V2X) communications has been widely studied to realize autonomous driving and advanced driver assistance systems (ADAS). Although V2X based on cellular networks has been investigated, in environments where cellular infrastructure is unavailable, sidelink communications that enables direct vehicle-to-vehicle communications without relying on cellular networks has been considered. However, sidelink communications suffers from performance degradation in environments with poor visibility, such as non-line-of-sight (NLOS) intersections. To address this issue, relay transmission using an unmanned aerial vehicle (UAV) has been investigated for such obstructed environments. In this scenario, data are transmitted from a source node to a destination node via a UAV relay node. Although theoretical analyses of various relay schemes have been studied, most existing studies assume ideal propagation environments. In this report, propagation models specified by ITU-R and 3GPP are applied to each link, and the optimal UAV relay position is theoretically analyzed under these realistic channel conditions.
Keyword (in Japanese) (See Japanese page) 
(in English) V2X / Sidelink communications / UAV / Relay network / / / /  
Reference Info. IEICE Tech. Rep., vol. 126, no. 7, RCS2026-1, pp. 1-6, April 2026.
Paper # RCS2026-1 
Date of Issue 2026-04-16 (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 RCS2026-1

Conference Information
Committee RCS  
Conference Date 2026-04-23 - 2026-04-24 
Place (in Japanese) (See Japanese page) 
Place (in English) Yonago 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Railroad Communications, Inter-Vehicle Communications, Road to Vehicle Communications, Radio Access Technologies, Wireless Communications, etc. 
Paper Information
Registration To RCS 
Conference Code 2026-04-RCS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Applicability Evaluation of Sidelink V2X Relay Transmission using UAV 
Sub Title (in English)  
Keyword(1) V2X  
Keyword(2) Sidelink communications  
Keyword(3) UAV  
Keyword(4) Relay network  
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1st Author's Name Hideya So  
1st Author's Affiliation Kogakuin University (Kogakuin Univ.)
2nd Author's Name Hikaru Shiraishi  
2nd Author's Affiliation Kogakuin University (Kogakuin Univ.)
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Speaker Author-1 
Date Time 2026-04-23 10:00:00 
Presentation Time 25 minutes 
Registration for RCS 
Paper # RCS2026-1 
Volume (vol) vol.126 
Number (no) no.7 
Page pp.1-6 
#Pages 6 
Date of Issue 2026-04-16 (RCS) 

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