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| Presentation | 2011-10-28 13:15 A CSMA/CA Based MAC Protocol to Improve TCP Performance in Multi-hop Cognitive Network Takamasa Kimura, Takeo Fujii (UEC)  SR2011-75 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | In this paper, we have propose a novel MAC protocol to improve the TCP(Transmission Control Protocol) performance in a cognitive multi-hop mobile ad hoc network (CR MANET: Cognitive Radio, Mobile Ad hoc Network) with wireless LAN system. In particular, the legacy wireless LAN (PU: Primary User) shares the spectrum for other users (SU: Secondary User) of MANET to increase the spectrum efficiency. In order to realize such spectrum sharing system, the SU should protect primary system during data sending. In general, the TCP performance of SU dramatically decreases in CR MANET environment. In particular, the congestion control mechanism of TCP miss-detects much congestion due to packet loss and time out even if congestion is not appeared. As a result, TCP performance degrades because TCP of transmitter over-decreases a amount of sending data. In this paper, in order to resolve such problem, we propose an adaptive contention widow size control method to correspond with TCP behavior. In the proposed method, the contention window size is controlled according to the TCP cwnd (congestion window) size at a MAC layer of each secondary sender. The performance of the proposed method is evaluated by using computer simulations and we confirm the effectiveness of the proposed method. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Cognitive Radio / MANET / MAC protocol / TCP / / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 111, no. 261, SR2011-75, pp. 193-198, Oct. 2011. | |
| Paper # | SR2011-75 | |
| Date of Issue | 2011-10-19 (SR) | |
| 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 | SR2011-75 |
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| Conference Information | |
| Committee | RCS AN SR USN |
| Conference Date | 2011-10-26 - 2011-10-28 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Sophia Univ. |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Wireless Distributed Networks, etc. |
| Paper Information | |
| Registration To | SR |
| Conference Code | 2011-10-RCS-AN-SR-USN |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A CSMA/CA Based MAC Protocol to Improve TCP Performance in Multi-hop Cognitive Network |
| Sub Title (in English) | |
| Keyword(1) | Cognitive Radio |
| Keyword(2) | MANET |
| Keyword(3) | MAC protocol |
| Keyword(4) | TCP |
| Keyword(5) | |
| Keyword(6) | |
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| Keyword(8) | |
| 1st Author's Name | Takamasa Kimura |
| 1st Author's Affiliation | The University of Electro-Communications (UEC) |
| 2nd Author's Name | Takeo Fujii |
| 2nd Author's Affiliation | The University of Electro-Communications (UEC) |
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| Speaker | Author-1 |
| Date Time | 2011-10-28 13:15:00 |
| Presentation Time | 25 minutes |
| Registration for | SR |
| Paper # | SR2011-75 |
| Volume (vol) | vol.111 |
| Number (no) | no.261 |
| Page | pp.193-198 |
| #Pages | 6 |
| Date of Issue | 2011-10-19 (SR) |
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