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Paper Abstract and Keywords
Presentation 2012-05-18 10:10
Hybrid Backoff Retransmission Control in Slotted Non-Persistent CSMA
Tomoya Tandai, Hiroshi Suzuki, Kazuhiko Fukawa, Satoshi Suyama (Tokyo Tech.) RCS2012-34
Abstract (in Japanese) (See Japanese page) 
(in English) A retransmission control scheme realizing both high-throughput and low-transmission delay is proposed for slotted Non-Persistent CSMA that is one of the CSMA schemes those are widely adopted in many wireless communication systems such as IEEE 802.11 Wireless LAN. A terminal that detects carrier busy in carrier sense or a terminal that fails to transmit a packet due to the packet collision is called a blocked terminal. The blocked terminal tries to retransmit a packet after the backoff period that is decided based on some algorithms. In the proposed scheme, a backoff period in case of detecting carrier busy in the carrier sense and a backoff period in case of experiencing the packet collision are calculated by the different algorithms. In case of detecting carrier busy, the constant backoff in which the blocked terminal retries after the constant backoff period and the linear backoff in which the blocked terminal retries based on the linearly-increased contention window are used whereas in case of the packet collision, the exponential backoff in which the blocked terminal retries based on the exponentially-increased contention window is used. It is considered that the transmission delay is reduced by taking the constant backoff and the linear backoff when detecting carrier busy that will happen with higher probability than the packet collision. The throughput performance and the transmission delay performance are evaluated by the computer simulations and the effectiveness of the proposed scheme is demonstrated.
Keyword (in Japanese) (See Japanese page) 
(in English) Non-Persistent CSMA / retransmission control / backoff / packet collision / throughput / transmission delay / /  
Reference Info. IEICE Tech. Rep., vol. 112, no. 29, RCS2012-34, pp. 73-78, May 2012.
Paper # RCS2012-34 
Date of Issue 2012-05-10 (RCS) 
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 RCS2012-34

Conference Information
Committee IN RCS  
Conference Date 2012-05-17 - 2012-05-18 
Place (in Japanese) (See Japanese page) 
Place (in English) Kuramae-Kaikan, Tokyo Institute of Technology 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Wireless Internet, Multi-hop network, Mesh network, Network coding, Cross layer technique, Wireless communication, etc. 
Paper Information
Registration To RCS 
Conference Code 2012-05-IN-RCS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Hybrid Backoff Retransmission Control in Slotted Non-Persistent CSMA 
Sub Title (in English)  
Keyword(1) Non-Persistent CSMA  
Keyword(2) retransmission control  
Keyword(3) backoff  
Keyword(4) packet collision  
Keyword(5) throughput  
Keyword(6) transmission delay  
Keyword(7)  
Keyword(8)  
1st Author's Name Tomoya Tandai  
1st Author's Affiliation Tokyo Institute of Technology (Tokyo Tech.)
2nd Author's Name Hiroshi Suzuki  
2nd Author's Affiliation Tokyo Institute of Technology (Tokyo Tech.)
3rd Author's Name Kazuhiko Fukawa  
3rd Author's Affiliation Tokyo Institute of Technology (Tokyo Tech.)
4th Author's Name Satoshi Suyama  
4th Author's Affiliation Tokyo Institute of Technology (Tokyo Tech.)
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Speaker Author-1 
Date Time 2012-05-18 10:10:00 
Presentation Time 25 minutes 
Registration for RCS 
Paper # RCS2012-34 
Volume (vol) vol.112 
Number (no) no.29 
Page pp.73-78 
#Pages 6 
Date of Issue 2012-05-10 (RCS) 

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