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Paper Abstract and Keywords
Presentation 2021-05-13 13:50
An Audit Mechanism for Spatio-Temporal Data Retention System Using Based on Multi-tier Blockchain
Junki Ueda, Kazuya Tsukamoto (kyutech), Hiroshi Yamamoto (Rits Univ), Daiki Nobayashi, Takeshi Ikenaga (kyutech) NS2021-17
Abstract (in Japanese) (See Japanese page) 
(in English) With the development of IoT technology, a large number of IoT devices and new applications are expected to emerge, generating a large amount of data. These data include spatio-temporal data (STD), which is needed only at a specific time and place. In our previous research, we proposed a spatio-temporal data retention system (STD-RS) using vehicles, aiming to construct a new network that keeps spatio-temporal data in a specific period and range. However, when STD-RS is operated in real space, there is a possibility that STD is transmitted outside the target range due to malfunctions caused by errors in location information, reception signal strength, bugs in software programs, etc. As a service provider using STD-RS, it is important to ensure the reliability of the provided range. In this paper, we propose a new method for the transmission of STD-RS. In this paper, we propose a multi-layered blockchain as a mechanism to audit STD-RS in the upper layer while the lower layer manages the STD generated from the real space. In order to achieve real-time auditing of STD-RS, it is important to reduce the block search time.
Keyword (in Japanese) (See Japanese page) 
(in English) Multilayered blockchain / Spatio-temporal Data / Data Retention / / / / /  
Reference Info. IEICE Tech. Rep., vol. 121, no. 17, NS2021-17, pp. 13-19, May 2021.
Paper # NS2021-17 
Date of Issue 2021-05-06 (NS) 
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)
Download PDF NS2021-17

Conference Information
Committee NS  
Conference Date 2021-05-13 - 2021-05-14 
Place (in Japanese) (See Japanese page) 
Place (in English) Online 
Topics (in Japanese) (See Japanese page) 
Topics (in English) High level protocol, Networking technologies (IP and high-layer routing/filtering, Multicast, Quality/Routing control), IP network application technologies (P2P, P4P, Overlay, SIP, NGN), Network system related technologies (System configuration, Interface, Architecture, Hardware/Software/Middleware), Security, Blockchain etc. 
Paper Information
Registration To NS 
Conference Code 2021-05-NS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) An Audit Mechanism for Spatio-Temporal Data Retention System Using Based on Multi-tier Blockchain 
Sub Title (in English)  
Keyword(1) Multilayered blockchain  
Keyword(2) Spatio-temporal Data  
Keyword(3) Data Retention  
1st Author's Name Junki Ueda  
1st Author's Affiliation Kyushu Institute of Technology (kyutech)
2nd Author's Name Kazuya Tsukamoto  
2nd Author's Affiliation Kyushu Institute of Technology (kyutech)
3rd Author's Name Hiroshi Yamamoto  
3rd Author's Affiliation Ritsumeikan University (Rits Univ)
4th Author's Name Daiki Nobayashi  
4th Author's Affiliation Kyushu Institute of Technology (kyutech)
5th Author's Name Takeshi Ikenaga  
5th Author's Affiliation Kyushu Institute of Technology (kyutech)
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Speaker Author-1 
Date Time 2021-05-13 13:50:00 
Presentation Time 25 minutes 
Registration for NS 
Paper # NS2021-17 
Volume (vol) vol.121 
Number (no) no.17 
Page pp.13-19 
Date of Issue 2021-05-06 (NS) 

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