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Paper Abstract and Keywords
Presentation 2020-01-23 14:55
[Encouragement Talk] Performance Evaluation of Time-Schedule Calculation Methods for Low-Delay Streams
Makoto Kubomi, Ryuma Matsushita, Daisuke Takita, Yoshifumi Hotta (Mitsubishi Electric) NS2019-164
Abstract (in Japanese) (See Japanese page) 
(in English) In industrial networks, Ethernet is known as the prevailing protocol due to its high capacity and cost effectiveness. These networks have a large number of streams with varying request delays and priorities multiplexed into a single network system. Scheduling to adjust the transfer time of the streams is known as a means to satisfy request delays, while a scheduling method for calculating appropriate time-slots according to the network configuration and stream characteristics has been previously proposed. However, since there is no queuing mechanism in the existing method, no solution is found in the case where scheduling is made possible by frame queuing. In our research, we developed a schedule calculation software that incorporates a queuing mechanism, and we compare the search performance of our method with the aforementioned for 20 randomly generated network topologies. As a result, we confirmed that the proposed method excels over the existing method for finding solutions where queuing was an inevitability. Although the proposed method is thorough, it requires large computational times. We therefore consider a criterion for using both methods, where the method is switched for networks that have multiple large End-to-End delay relative to the cycle time streams multiplexed on one switch output on the same port. In future work, we plan to investigate whether there exists criteria for more general networks.
Keyword (in Japanese) (See Japanese page) 
(in English) Layer 2 Switch / Ethernet / Scheduling / SMT / / / /  
Reference Info. IEICE Tech. Rep., vol. 119, no. 383, NS2019-164, pp. 19-23, Jan. 2020.
Paper # NS2019-164 
Date of Issue 2020-01-16 (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. (No. 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
Download PDF NS2019-164

Conference Information
Committee NS NWS  
Conference Date 2020-01-23 - 2020-01-24 
Place (in Japanese) (See Japanese page) 
Place (in English)  
Topics (in Japanese) (See Japanese page) 
Topics (in English) Network software (Software architecture, Middleware), Network application, SOA/SDP, NGN/IMS/API, Distributed control/Dynamic routing, Grid, NFV, IoT, Network/System reliability, Network/System evaluation, etc. 
Paper Information
Registration To NS 
Conference Code 2020-01-NS-NWS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Performance Evaluation of Time-Schedule Calculation Methods for Low-Delay Streams 
Sub Title (in English)  
Keyword(1) Layer 2 Switch  
Keyword(2) Ethernet  
Keyword(3) Scheduling  
Keyword(4) SMT  
1st Author's Name Makoto Kubomi  
1st Author's Affiliation Mitsubishi Electric Corporation (Mitsubishi Electric)
2nd Author's Name Ryuma Matsushita  
2nd Author's Affiliation Mitsubishi Electric Corporation (Mitsubishi Electric)
3rd Author's Name Daisuke Takita  
3rd Author's Affiliation Mitsubishi Electric Corporation (Mitsubishi Electric)
4th Author's Name Yoshifumi Hotta  
4th Author's Affiliation Mitsubishi Electric Corporation (Mitsubishi Electric)
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Date Time 2020-01-23 14:55:00 
Presentation Time 25 
Registration for NS 
Paper # IEICE-NS2019-164 
Volume (vol) IEICE-119 
Number (no) no.383 
Page pp.19-23 
#Pages IEICE-5 
Date of Issue IEICE-NS-2020-01-16 

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