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Paper Abstract and Keywords
Presentation 2012-11-16 14:25
A Study on Mode Decision Method and Retransmission Control for Simultaneous Transmission
Masashi Iwabuchi, Akira Kishida, Toshiyuki Shintaku, Tetsu Sakata (NTT) RCS2012-180
Abstract (in Japanese) (See Japanese page) 
(in English) Total throughput degrades dramatically due to frame collisions and waiting time when there are many active transmitters using CSMA/CA. A medium access control method for simultaneous transmissions has ever been proposed by the former reports. The proposed method aims to use the capture effect to realize simultaneous transmission and higher overall throughput. However, this method degrades its performance if transmitters can not decide whether simultanous transmission is possible at receiver. This paper proposes two decision methods and evaluates thier performances. In the proposed methods, transmitters decide whether thier transmission can be done simultanously based on a received Signal-to-Interference Ratio(SIR). The received SIR is estimated from Received Signal Strength Indicators(RSSIs) obtained from received frames. However, these decision methods may cause degradation of throughput due to an error of SIR estimated by transmitter. In order to solve this problem, a retransmission control is also proposed in this paper. The performance of the proposed methods is evaluated by computer simulations. The simulation results show the proposed methods improve throughput compared with conventional CSMA/CA.
Keyword (in Japanese) (See Japanese page) 
(in English) Simultaneous transmission / Capture effect / Backoff control / CSMA/CA / IEEE802.11 / / /  
Reference Info. IEICE Tech. Rep., vol. 112, no. 286, RCS2012-180, pp. 115-120, Nov. 2012.
Paper # RCS2012-180 
Date of Issue 2012-11-08 (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)
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Conference Information
Committee AP RCS  
Conference Date 2012-11-14 - 2012-11-16 
Place (in Japanese) (See Japanese page) 
Place (in English) Tokyo Denki University 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To RCS 
Conference Code 2012-11-AP-RCS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A Study on Mode Decision Method and Retransmission Control for Simultaneous Transmission 
Sub Title (in English)  
Keyword(1) Simultaneous transmission  
Keyword(2) Capture effect  
Keyword(3) Backoff control  
Keyword(4) CSMA/CA  
Keyword(5) IEEE802.11  
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1st Author's Name Masashi Iwabuchi  
1st Author's Affiliation NTT (NTT)
2nd Author's Name Akira Kishida  
2nd Author's Affiliation NTT (NTT)
3rd Author's Name Toshiyuki Shintaku  
3rd Author's Affiliation NTT (NTT)
4th Author's Name Tetsu Sakata  
4th Author's Affiliation NTT (NTT)
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Speaker Author-1 
Date Time 2012-11-16 14:25:00 
Presentation Time 25 minutes 
Registration for RCS 
Paper # RCS2012-180 
Volume (vol) vol.112 
Number (no) no.286 
Page pp.115-120 
#Pages 6 
Date of Issue 2012-11-08 (RCS) 

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