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Paper Abstract and Keywords
Presentation 2022-09-16 14:30
A Fast Handover Mechanism for Ground-to-Train Free-Space Optical Communication using Base Station ID Recognition by Dual-Port Camera
Kosuke Mori, Fumio Teraoka, Shinichiro Haruyama (Keio Univ.) IA2022-29
Abstract (in Japanese) (See Japanese page) 
(in English) There is a demand for high-speed and stable ground-to-train optical communication as a network environment for trains. The existing ground-to-train optical communication system developed by the authors uses a camera and a QPD (Quadrant photo diode) to capture beacon beacon beams. The problem with the existing system is that it is impossible to identify the base station. In the system proposed in this paper, a beacon light modulated with the ID of the base station is transmitted, and the base station is identified by demodulating the image from the dual-port camera on the opposite side. In this paper, we developed an actual system and conducted experiments using a car on the road. The results showed that only one packet was lost with the ping command every 1 ms near handover. Although the communication device itself has a bandwidth of 100 Mbps, the throughput before and after the handover was about 94 Mbps, and only dropped to about 89.4 Mbps during the handover.
Keyword (in Japanese) (See Japanese page) 
(in English) Free-space optical communication / Ground-to-train communication / Fast handover / / / / /  
Reference Info. IEICE Tech. Rep., vol. 122, no. 185, IA2022-29, pp. 77-84, Sept. 2022.
Paper # IA2022-29 
Date of Issue 2022-09-08 (IA) 
ISSN Online edition: ISSN 2432-6380
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)
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Conference Information
Committee IA CQ MIKA  
Conference Date 2022-09-15 - 2022-09-16 
Place (in Japanese) (See Japanese page) 
Place (in English) Hokkaido Citizens Actives Center 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Wireless Communications Quality, 6G, IoT, Cross layer Technologies, Internet Operation and Management, etc. 
Paper Information
Registration To IA 
Conference Code 2022-09-IA-CQ-MIKA 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A Fast Handover Mechanism for Ground-to-Train Free-Space Optical Communication using Base Station ID Recognition by Dual-Port Camera 
Sub Title (in English)  
Keyword(1) Free-space optical communication  
Keyword(2) Ground-to-train communication  
Keyword(3) Fast handover  
1st Author's Name Kosuke Mori  
1st Author's Affiliation Keio University (Keio Univ.)
2nd Author's Name Fumio Teraoka  
2nd Author's Affiliation Keio University (Keio Univ.)
3rd Author's Name Shinichiro Haruyama  
3rd Author's Affiliation Keio University (Keio Univ.)
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Speaker Author-1 
Date Time 2022-09-16 14:30:00 
Presentation Time 25 minutes 
Registration for IA 
Paper # IA2022-29 
Volume (vol) vol.122 
Number (no) no.185 
Page pp.77-84 
Date of Issue 2022-09-08 (IA) 

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