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| Presentation | 2008-09-12 10:40 Analysis of Per-Flow Throughput Unfairness for IEEE802.11-based Multihop Wireless LANs Tomoya Tainaka, Hiroyuki Masuyama, Shoji Kasahara, Yutaka Takahashi (Kyoto Univ.)  NS2008-56 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | In the IEEE 802.11 Distributed Coordination Function (DCF) MAC protocol, the four-way handshake mechanism based on the exchange of request to send (RTS) and clear to send (CTS) messages resolves the hidden terminal problem in a single-hop wireless network, which results in increasing the overall throughput. However, in IEEE 802.11-based multihop wireless local area networks (LANs), the RTS/CTS-based access mechanism and half-duplex transmission of a wireless link cause unfairness in the end-to-end throughput with regard to the number of transmission hops. Most of the previous studies related to this problem are based on simulation, and there is little work taking into account the flow-level behavior resulting from the IEEE 802.11 MAC protocol. In this paper, we analyze the end-to-end throughput for a backhaul-type wireless mesh network using a continuous-time Markov chain. Focusing on the three-node chain topology, we model it as a tandem queueing network with two nodes, deriving the end-to-end throughput. We validate the analysis with ns-2 simulation. Numerical results show that the analytical results agree fairly well with simulation results, and that the throughput of a one-hop flow is hardly affected by the offered load of a two-hop flow. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | IEEE 802.11 DCF / Multihop Wireless LAN / Throughput Unfairness / CSMA/CA / Markov Analysis / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 108, no. 203, NS2008-56, pp. 81-86, Sept. 2008. | |
| Paper # | NS2008-56 | |
| Date of Issue | 2008-09-04 (NS) | |
| 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 | NS2008-56 |
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| Conference Information | |
| Committee | CS IN NS |
| Conference Date | 2008-09-11 - 2008-09-12 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Tohoku University |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Overlay networks, VPN, DDos, network security, p2p communications, network software, etc. |
| Paper Information | |
| Registration To | NS |
| Conference Code | 2008-09-CS-IN-NS |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Analysis of Per-Flow Throughput Unfairness for IEEE802.11-based Multihop Wireless LANs |
| Sub Title (in English) | |
| Keyword(1) | IEEE 802.11 DCF |
| Keyword(2) | Multihop Wireless LAN |
| Keyword(3) | Throughput Unfairness |
| Keyword(4) | CSMA/CA |
| Keyword(5) | Markov Analysis |
| Keyword(6) | |
| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Tomoya Tainaka |
| 1st Author's Affiliation | Kyoto University (Kyoto Univ.) |
| 2nd Author's Name | Hiroyuki Masuyama |
| 2nd Author's Affiliation | Kyoto University (Kyoto Univ.) |
| 3rd Author's Name | Shoji Kasahara |
| 3rd Author's Affiliation | Kyoto University (Kyoto Univ.) |
| 4th Author's Name | Yutaka Takahashi |
| 4th Author's Affiliation | Kyoto University (Kyoto Univ.) |
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| Speaker | Author-1 |
| Date Time | 2008-09-12 10:40:00 |
| Presentation Time | 20 minutes |
| Registration for | NS |
| Paper # | NS2008-56 |
| Volume (vol) | vol.108 |
| Number (no) | no.203 |
| Page | pp.81-86 |
| #Pages | 6 |
| Date of Issue | 2008-09-04 (NS) |
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