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Paper Abstract and Keywords
Presentation 2010-03-05 14:30
Comparison of Routing and Wavelength Assignment Optimization in Optical Packet Switching Networks
Shingo Hara (Waseda Univ.), Sugang Xu (NICT), Yoshiaki Tanaka (Waseda Univ.) NS2009-246
Abstract (in Japanese) (See Japanese page) 
(in English) In optical packet switching networks, packet contention occurs at a switching node whenever two or more packets try to reach the same output port of the node at the same wavelength, consequently network performance in terms of the packet loss rate and fairness decreases. In previous studies, an effective wavelength assignment mechanism named Least Congestion Wavelength Assignment (LCWA) was proposed to improve the network performance. This method takes the traffic distribution information into account. Based on the previous studies which merely focus on the wavelength assignment calculation, in this paper, we investigate two approaches of optimizations for integrating routing and wavelength assignment. One is a separated optimal routing and wavelength assignment, and the other is a jointed optimal routing and wavelength assignment. Simulation results show that, with limited number of wavelength resources, two approaches have the same performance; with increased number of wavelength resources, the jointed optimization outperforms the separated optimization in terms of packet loss rate. In addition, both approaches can improve the fairness performance dramatically compared to previous LCWA which employs random routing.
Keyword (in Japanese) (See Japanese page) 
(in English) optical packet switching / routing / wavelength assignment / contention avoidance / / / /  
Reference Info. IEICE Tech. Rep., vol. 109, no. 448, NS2009-246, pp. 473-478, March 2010.
Paper # NS2009-246 
Date of Issue 2010-02-25 (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 NS2009-246

Conference Information
Committee NS IN  
Conference Date 2010-03-04 - 2010-03-05 
Place (in Japanese) (See Japanese page) 
Place (in English) Miyazaki Phoenix Seagaia Resort (Miyazaki) 
Topics (in Japanese) (See Japanese page) 
Topics (in English) General, NS+IN workshop (March 4-5) 
Paper Information
Registration To NS 
Conference Code 2010-03-NS-IN 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Comparison of Routing and Wavelength Assignment Optimization in Optical Packet Switching Networks 
Sub Title (in English)  
Keyword(1) optical packet switching  
Keyword(2) routing  
Keyword(3) wavelength assignment  
Keyword(4) contention avoidance  
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1st Author's Name Shingo Hara  
1st Author's Affiliation Waseda University (Waseda Univ.)
2nd Author's Name Sugang Xu  
2nd Author's Affiliation National Institute of Information and Communications Technology (NICT)
3rd Author's Name Yoshiaki Tanaka  
3rd Author's Affiliation Waseda University (Waseda Univ.)
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Speaker Author-1 
Date Time 2010-03-05 14:30:00 
Presentation Time 20 minutes 
Registration for NS 
Paper # NS2009-246 
Volume (vol) vol.109 
Number (no) no.448 
Page pp.473-478 
#Pages 6 
Date of Issue 2010-02-25 (NS) 

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