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| Presentation | 2006-06-23 13:00 A New Scheduler to Guarantee Delay Bound with Bandwidth Optimization for HCCA in IEEE 802.11e WLANs Yuhi Higuchi, Augusto Foronda, Chikara Ohta (Kobe Univ.), Yoji Okada (Sumitomo Electric), Masahiko Yoshimoto (Kobe Univ.)  IN2006-28 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | IEEE 802.11e Medium Access Control (MAC) is a supplement to the IEEE 802.11 Wireless Network (WLAN) standard to support Quality of Service (QoS). The 802.11e MAC defines a new coordination function, namely Hybrid Coordination Function (HCF), which takes the QoS requirements of flows into account and allocates time to stations on the basis of the mean sending rate, then delay of variable bit rate (VBR) traffic cannot be bounded with the standard HCF scheduling algorithm proposed in this supplement. In this paper, we proposed a new scheduling algorithm that utilizes the token bucket and a modified Latency-Rate (LR) scheduling algorithm to guarantee a bounded delay and loss-free packet transmission. The new allocated time to stations takes into account delay bound and token bucket parameters. We show that is possible to obtain the worst-case performance guarantees on delay. Properties of the proposal are investigated both theoretically and using ns-2 simulations. We present a set of simulations with both constant bit rate (CBR) and VBR flows and performance comparisons with HCF scheduling algorithm. The results show that the upper bounds can be achieved for a large range of networks load. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | QoS / HCCA / Delay Guarantee / token bucket / / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 106, no. 118, IN2006-28, pp. 67-72, June 2006. | |
| Paper # | IN2006-28 | |
| Date of Issue | 2006-06-15 (IN) | |
| 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 | IN2006-28 |
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| Conference Information | |
| Committee | IN |
| Conference Date | 2006-06-22 - 2006-06-23 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Paper Information | |
| Registration To | IN |
| Conference Code | 2006-06-IN |
| Language | English |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A New Scheduler to Guarantee Delay Bound with Bandwidth Optimization for HCCA in IEEE 802.11e WLANs |
| Sub Title (in English) | |
| Keyword(1) | QoS |
| Keyword(2) | HCCA |
| Keyword(3) | Delay Guarantee |
| Keyword(4) | token bucket |
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| 1st Author's Name | Yuhi Higuchi |
| 1st Author's Affiliation | Kobe University (Kobe Univ.) |
| 2nd Author's Name | Augusto Foronda |
| 2nd Author's Affiliation | Kobe University (Kobe Univ.) |
| 3rd Author's Name | Chikara Ohta |
| 3rd Author's Affiliation | Kobe University (Kobe Univ.) |
| 4th Author's Name | Yoji Okada |
| 4th Author's Affiliation | Sumitomo Electric Industries, Ltd (Sumitomo Electric) |
| 5th Author's Name | Masahiko Yoshimoto |
| 5th Author's Affiliation | Kobe University (Kobe Univ.) |
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| Speaker | Author-1 |
| Date Time | 2006-06-23 13:00:00 |
| Presentation Time | 25 minutes |
| Registration for | IN |
| Paper # | IN2006-28 |
| Volume (vol) | vol.106 |
| Number (no) | no.118 |
| Page | pp.67-72 |
| #Pages | 6 |
| Date of Issue | 2006-06-15 (IN) |
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