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Paper Abstract and Keywords
Presentation 2017-07-27 10:20
Mobile Delay Tomography Considering Differences in the Amount of Measurement Data among Paths
Hideaki Kinsho (Osaka Univ.), Rie Tagyo, Daisuke Ikegami (NTT), Takahiro Matsuda (Osaka Univ.), Jun Okamoto (NTT), Tetsuya Takine (Osaka Univ.) CQ2017-31
Abstract (in Japanese) (See Japanese page) 
(in English) In mobile networks, in order to estimate delays at network components such as base stations and servers, a delay tomography scheme using Graph Fourier Transform and Compressed Sensing has been proposed. In this scheme, a measurement path is defined by a pair of a base station and a server, and RTTs~(Round Trip Times) measured on multiple measurement paths are collected by crowdsourcing. Delays at the network components are estimated from a measurement vector, where each element of the vector is given by averaging measured RTTs on each measurement path. The delay tomography scheme is formulated under an assumption that a sufficient amount of measurement data is available on each measurement path. In the crowdsourcing approach, which is based on voluntary mobile users, however, some measurement paths may have insufficient measurement data, which causes the performance degradation of the delay tomography scheme. In this article, we extend the delay tomography scheme to improve the performance in such a situation. In the extended scheme, delays are estimated by weighing elements of the measurement vector according to the amount of measurement data.
Keyword (in Japanese) (See Japanese page) 
(in English) Delay Tomography / graph Fourier transform / Compressed Sensing / Crowdsourcing / / / /  
Reference Info. IEICE Tech. Rep., vol. 117, no. 159, CQ2017-31, pp. 13-18, July 2017.
Paper # CQ2017-31 
Date of Issue 2017-07-20 (CQ) 
ISSN Print edition: ISSN 0913-5685  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 CQ  
Conference Date 2017-07-27 - 2017-07-28 
Place (in Japanese) (See Japanese page) 
Place (in English) Kobe University 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Assessment, Measurement and Control of QoE and QoS, etc. 
Paper Information
Registration To CQ 
Conference Code 2017-07-CQ 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Mobile Delay Tomography Considering Differences in the Amount of Measurement Data among Paths 
Sub Title (in English)  
Keyword(1) Delay Tomography  
Keyword(2) graph Fourier transform  
Keyword(3) Compressed Sensing  
Keyword(4) Crowdsourcing  
1st Author's Name Hideaki Kinsho  
1st Author's Affiliation Osaka University (Osaka Univ.)
2nd Author's Name Rie Tagyo  
2nd Author's Affiliation NTT Corporation (NTT)
3rd Author's Name Daisuke Ikegami  
3rd Author's Affiliation NTT Corporation (NTT)
4th Author's Name Takahiro Matsuda  
4th Author's Affiliation Osaka University (Osaka Univ.)
5th Author's Name Jun Okamoto  
5th Author's Affiliation NTT Corporation (NTT)
6th Author's Name Tetsuya Takine  
6th Author's Affiliation Osaka University (Osaka Univ.)
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Date Time 2017-07-27 10:20:00 
Presentation Time 25 
Registration for CQ 
Paper # IEICE-CQ2017-31 
Volume (vol) IEICE-117 
Number (no) no.159 
Page pp.13-18 
#Pages IEICE-6 
Date of Issue IEICE-CQ-2017-07-20 

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