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| Presentation | 2011-12-16 11:00 Realizing Fair Sharing of WLAN Channels in the Presence of Legacy Devices Suhua Tang, Akio Hasegawa, Tatsuo Shibata, Masayoshi Ohashi (ATR)  RCS2011-253 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | IEEE 802.11n is being widely deployed since its finalization. But legacy WLAN devices running 802.11g or even 802.11b will co-exist for a long time and share the same 2.4GHz ISM band. Although 802.11n is designed to be backward compatible with 802.11b/g, there are few evaluation results. In addition, frame aggregation, used by 802.11n devices to reduce protocol overhead, may affect channel usage of legacy devices. In this paper, we study the coexistence of 802.11g/n devices, and aim to realize fair sharing of channels. We study two aspects: (i) Intra-cell channel access control. Contention window of 802.11n devices is adjusted based on frame aggregation size so that each node gets a fair share of the channel in terms of air-time. (ii) Association control. Nodes are properly assigned to APs running on different channels to ensure fair share of channels across cells. As a result, each node gets the same air-time ratio, during which a new node achieves higher throughput while a legacy node will not be starved. Theoretical analysis and simulation results confirm that the proposed method realizes proportional fair scheduling. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Co-existence / 802.11n / legacy device / fair scheduling / / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 111, no. 345, RCS2011-253, pp. 123-128, Dec. 2011. | |
| Paper # | RCS2011-253 | |
| Date of Issue | 2011-12-08 (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) | |
| Download PDF | RCS2011-253 |
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| Conference Information | |
| Committee | NS RCS |
| Conference Date | 2011-12-15 - 2011-12-16 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Yamaguchi University |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Mobile Ad-hoc Network, Ubiquitous Network, Wireless Communication, security, Multi-Access Network |
| Paper Information | |
| Registration To | RCS |
| Conference Code | 2011-12-NS-RCS |
| Language | English |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Realizing Fair Sharing of WLAN Channels in the Presence of Legacy Devices |
| Sub Title (in English) | |
| Keyword(1) | Co-existence |
| Keyword(2) | 802.11n |
| Keyword(3) | legacy device |
| Keyword(4) | fair scheduling |
| Keyword(5) | |
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| 1st Author's Name | Suhua Tang |
| 1st Author's Affiliation | ATR (ATR) |
| 2nd Author's Name | Akio Hasegawa |
| 2nd Author's Affiliation | ATR (ATR) |
| 3rd Author's Name | Tatsuo Shibata |
| 3rd Author's Affiliation | ATR (ATR) |
| 4th Author's Name | Masayoshi Ohashi |
| 4th Author's Affiliation | ATR (ATR) |
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| Speaker | Author-1 |
| Date Time | 2011-12-16 11:00:00 |
| Presentation Time | 25 minutes |
| Registration for | RCS |
| Paper # | RCS2011-253 |
| Volume (vol) | vol.111 |
| Number (no) | no.345 |
| Page | pp.123-128 |
| #Pages | 6 |
| Date of Issue | 2011-12-08 (RCS) |
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