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| Presentation | 2006-07-19 15:35 Impact of Multi-Rate VoIP on Quality of Service in IEEE 802.11e with Link Adaptation Takehiro Kawata, Hiroshi Yamada (NTT)  NS2006-51 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | IEEE 802.11 supports the Link Adaptation function, which allows a wireless transmitter to select an appropriate transmission rate on a frame basis according to the wireless link conditions, to improve the throughput in fluctuating wireless link conditions. However, if a lower transmission rate is selected, packet delays and losses will be increased due to the poor available bandwidth, and as a result the quality of real-time applications will deteriorate. In order to improve the quality of such applications, the multi-rate VoIP control scheme is proposed, in which the appropriate voice encoding rate and packetization interval are selected according to the transmission rate in the PHY layer. In this paper, we first study IEEE 802.11e with Link Adaptation in fluctuating wireless conditions. Then we show that the multi-rate VoIP can improve the quality of voice applications in such conditions even if best-effort traffic coexists. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | IEEE 802.11e / VoIP / Link Adaptation / Multi-rate VoIP / / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 106, no. 167, NS2006-51, pp. 29-32, July 2006. | |
| Paper # | NS2006-51 | |
| Date of Issue | 2006-07-12 (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 | NS2006-51 |
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| Conference Information | |
| Committee | RCS NS |
| Conference Date | 2006-07-19 - 2006-07-21 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Hokkaido Univ. |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Paper Information | |
| Registration To | NS |
| Conference Code | 2006-07-RCS-NS |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Impact of Multi-Rate VoIP on Quality of Service in IEEE 802.11e with Link Adaptation |
| Sub Title (in English) | |
| Keyword(1) | IEEE 802.11e |
| Keyword(2) | VoIP |
| Keyword(3) | Link Adaptation |
| Keyword(4) | Multi-rate VoIP |
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| Keyword(8) | |
| 1st Author's Name | Takehiro Kawata |
| 1st Author's Affiliation | Nippon Telegraph and Telephone Corporation (NTT) |
| 2nd Author's Name | Hiroshi Yamada |
| 2nd Author's Affiliation | Nippon Telegraph and Telephone Corporation (NTT) |
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| Speaker | Author-1 |
| Date Time | 2006-07-19 15:35:00 |
| Presentation Time | 20 minutes |
| Registration for | NS |
| Paper # | NS2006-51 |
| Volume (vol) | vol.106 |
| Number (no) | no.167 |
| Page | pp.29-32 |
| #Pages | 4 |
| Date of Issue | 2006-07-12 (NS) |
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