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Paper Abstract and Keywords
Presentation 2021-09-09 11:15
Swift Estimation Method of Available Bandwidth to Realize Robust Wireless Video Transmission Systems
Akihiro Wada, Tatsuya Kikuzuki, Kotaro Shiizaki, Kohji Yamada, Kaoru Yokoo, Teruhisa Ninomiya (Fujitsu Ltd.) NS2021-59
Abstract (in Japanese) (See Japanese page) 
(in English) Realtime wireless video services, such as remote surveillance and teleoperation, have attracted significant attention due to the advent of local 5G. However, drastic changes of available bandwidth due to interference or shadowing by moving obstacles poses challenges to providing guaranteed quality of video stream without disconnection over wireless network, which requires a certain estimation of available bandwidth based on the estimation of the changing wireless environment and then controlling the video quality. In the conventional study, available bandwidth is estimated quickly by using the table mapping the received signal strength indicator (RSSI) to the available bandwidth (AB). However, because the fixed table doesn’t reflect the wireless interference, it causes differences between the estimated available bandwidth and the true one. In this paper, to estimate the available bandwidth more precisely, reflecting the changing wireless environment, we propose the hybrid calibration method which consists of the long term calibration and the short term calibration. Moreover, for the experimental evaluation of the proposed method, a real network scenario is implemented, including a video transmission link and an interference link both connected via the same Access Point. The result shows the proposed method is more than 1.6 times as accurate as the conventional method on the basis of “the ratio of divergence” which indicates the difference from the actual bandwidth.
Keyword (in Japanese) (See Japanese page) 
(in English) Available Bandwidth / RSSI / Calibration / Robust Wireless Video Transmission / / / /  
Reference Info. IEICE Tech. Rep., vol. 121, no. 170, NS2021-59, pp. 12-17, Sept. 2021.
Paper # NS2021-59 
Date of Issue 2021-09-02 (NS) 
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)
Download PDF NS2021-59

Conference Information
Committee IN NS CS NV  
Conference Date 2021-09-09 - 2021-09-10 
Place (in Japanese) (See Japanese page) 
Place (in English) Online 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Session management (SIP/IMS), Interoperability/Standardization, NGN/NwGN/Future networks, Cloud/Data center networks, SDN (OpenFlow, etc.)/NFV, IPv6, Machine learning, etc. 
Paper Information
Registration To NS 
Conference Code 2021-09-IN-NS-CS-NV 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Swift Estimation Method of Available Bandwidth to Realize Robust Wireless Video Transmission Systems 
Sub Title (in English)  
Keyword(1) Available Bandwidth  
Keyword(2) RSSI  
Keyword(3) Calibration  
Keyword(4) Robust Wireless Video Transmission  
1st Author's Name Akihiro Wada  
1st Author's Affiliation Fujitsu Limited (Fujitsu Ltd.)
2nd Author's Name Tatsuya Kikuzuki  
2nd Author's Affiliation Fujitsu Limited (Fujitsu Ltd.)
3rd Author's Name Kotaro Shiizaki  
3rd Author's Affiliation Fujitsu Limited (Fujitsu Ltd.)
4th Author's Name Kohji Yamada  
4th Author's Affiliation Fujitsu Limited (Fujitsu Ltd.)
5th Author's Name Kaoru Yokoo  
5th Author's Affiliation Fujitsu Limited (Fujitsu Ltd.)
6th Author's Name Teruhisa Ninomiya  
6th Author's Affiliation Fujitsu Limited (Fujitsu Ltd.)
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Speaker Author-1 
Date Time 2021-09-09 11:15:00 
Presentation Time 25 minutes 
Registration for NS 
Paper # NS2021-59 
Volume (vol) vol.121 
Number (no) no.170 
Page pp.12-17 
Date of Issue 2021-09-02 (NS) 

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