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Paper Abstract and Keywords
Presentation 2012-03-09 15:20
Light-trail Multi-splitting Method in Light-trail Networks
Yukinobu Fukushima, Taishi Kikumoto, Wenjie Chen, Tokumi Yokohira (Okayama Univ.) NS2011-261
Abstract (in Japanese) (See Japanese page) 
(in English) As a new optical network architecture that can be built with currently available devices and can achieve bandwidth allocation with granularity finer than a wavelength, the light-trail architecture attracts attention. For the light-trail architecture using token passing medium access control, the split trail architecture is proposed for improving the throughput. In the architecture, a trail is split into the upstream trail and the downstream trail at the token holding node and independent data transmissions on the two trails are permitted. However, the split trail architecture leaves the bandwidth of links upstream of the upstream-token holding node idle because the split of the trail is driven by the reception of only the downstream-token. In this paper, we propose the multi-split trail architecture for further improving the throughput. Our architecture utilizes the idle bandwidth by splitting the trail driven by the reception of both upstream- and downstream-tokens. We formulate the decision problem of the traffic accommodation where we optimize the token holding times so that the input traffic is successfully accommodated, as a linear programming problem. Then, we derive the maximum effective throughput of the multi-split trail architecture by solving the problem, and investigate the degree of improvement over the split trail architecture. According to numerical examples, the multi-split trail architecture achieves 1) the same maximum effective throughput as the split trail architecture for an uniform traffic pattern where every node pair has the same sending rate, and 2) about 1.93 times as high maximum effective throughput for its favorite traffic pattern where every transmission node sends data to its adjacent downstream node only and their rates are identical.
Keyword (in Japanese) (See Japanese page) 
(in English) Light-trail networks / Token passing MAC / Light-trail Multi-splitting method / / / / /  
Reference Info. IEICE Tech. Rep., vol. 111, no. 468, NS2011-261, pp. 463-468, March 2012.
Paper # NS2011-261 
Date of Issue 2012-03-01 (NS) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
Copyright
and
reproduction		 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 NS2011-261

Conference Information
Committee NS IN  
Conference Date 2012-03-08 - 2012-03-09 
Place (in Japanese) (See Japanese page) 
Place (in English) Miyazaki Seagia 
Topics (in Japanese) (See Japanese page) 
Topics (in English) General 
Paper Information
Registration To NS 
Conference Code 2012-03-NS-IN 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Light-trail Multi-splitting Method in Light-trail Networks 
Sub Title (in English)  
Keyword(1) Light-trail networks  
Keyword(2) Token passing MAC  
Keyword(3) Light-trail Multi-splitting method  
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1st Author's Name Yukinobu Fukushima  
1st Author's Affiliation Okayama University (Okayama Univ.)
2nd Author's Name Taishi Kikumoto  
2nd Author's Affiliation Okayama University (Okayama Univ.)
3rd Author's Name Wenjie Chen  
3rd Author's Affiliation Okayama University (Okayama Univ.)
4th Author's Name Tokumi Yokohira  
4th Author's Affiliation Okayama University (Okayama Univ.)
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Speaker Author-1 
Date Time 2012-03-09 15:20:00 
Presentation Time 20 minutes 
Registration for NS 
Paper # NS2011-261 
Volume (vol) vol.111 
Number (no) no.468 
Page pp.463-468 
#Pages 6 
Date of Issue 2012-03-01 (NS) 

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