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| Presentation | 2008-10-22 14:00 Network Coding Based Relay Scheme for Wireless LAN Suhua Tang, Hiroyuki Yomo, Mehdad N. Shirazi, Tetsuro Ueda, Ryu Miura, Sadao Obana (ATR)  AN2008-37 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | Network coding is an effective method to improve channel efficiency by reducing the number of transmissions. Most existing network coding schemes proposed for unicast transmissions focus on scheduling where paths are already established. In addition, a fixed rate within the whole network is assumed, neglecting link rate heterogeneity. In this paper we propose a network coding based pseudo bidirectional relay scheme for wireless LAN, taking link quality into account. We aim to reduce the actual transmission time under rate adaptation. We propose three techniques to realize this objective. (i) Suggesting a criterion for bidirectional relay selection, which aggregates flows to enable network coding; (ii) Handling traffic asymmetry by hybrid relay schemes; (iii) Proposing a network-coding aware MAC protocol, where positive (ACK) or negative (NAK) acknowledgements are adopted to reflect the receive status. Back-off and retransmissions are introduced to further improve reliability. Numerical results show that compared with direct transmission without relay, the proposed scheme can effectively reduce per-packet transmission time by up to 35% in Rayleigh fading environment. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Network coding / relay / MAC / wireless LAN / / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 108, no. 251, AN2008-37, pp. 45-50, Oct. 2008. | |
| Paper # | AN2008-37 | |
| Date of Issue | 2008-10-15 (AN) | |
| 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 | AN2008-37 |
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| Conference Information | |
| Committee | SR RCS USN AN |
| Conference Date | 2008-10-22 - 2008-10-24 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Okinawa industry support center |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Wireless discributed network special session and general session |
| Paper Information | |
| Registration To | AN |
| Conference Code | 2008-10-SR-RCS-USN-AN |
| Language | English |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Network Coding Based Relay Scheme for Wireless LAN |
| Sub Title (in English) | |
| Keyword(1) | Network coding |
| Keyword(2) | relay |
| Keyword(3) | MAC |
| Keyword(4) | wireless LAN |
| Keyword(5) | |
| Keyword(6) | |
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| Keyword(8) | |
| 1st Author's Name | Suhua Tang |
| 1st Author's Affiliation | Advanced Telecommunications Research Institute International (ATR) |
| 2nd Author's Name | Hiroyuki Yomo |
| 2nd Author's Affiliation | Advanced Telecommunications Research Institute International (ATR) |
| 3rd Author's Name | Mehdad N. Shirazi |
| 3rd Author's Affiliation | Advanced Telecommunications Research Institute International (ATR) |
| 4th Author's Name | Tetsuro Ueda |
| 4th Author's Affiliation | Advanced Telecommunications Research Institute International (ATR) |
| 5th Author's Name | Ryu Miura |
| 5th Author's Affiliation | Advanced Telecommunications Research Institute International (ATR) |
| 6th Author's Name | Sadao Obana |
| 6th Author's Affiliation | Advanced Telecommunications Research Institute International (ATR) |
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| Speaker | Author-1 |
| Date Time | 2008-10-22 14:00:00 |
| Presentation Time | 20 minutes |
| Registration for | AN |
| Paper # | AN2008-37 |
| Volume (vol) | vol.108 |
| Number (no) | no.251 |
| Page | pp.45-50 |
| #Pages | 6 |
| Date of Issue | 2008-10-15 (AN) |
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