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| Presentation | 2020-03-05 11:40 QoS Control for mission critical communication on automobile with IEEE802.11 wireless LAN against Dynamic Interference Takumi Shiohara, Tutomu Murase (Nagoya Univ.)  IN2019-91 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | In this research, we propose a speed-adaptive contention window(CW) control method that reduces the maximum delay against dynamic interference on automobile with IEEE802.11 wireless LAN communication. The method is developed for mission critical communications for periodic tiny data. In the proposed method, the average backoff time (random wait time) is reduced as the vehicle speed decreases, and it is performed to reduce the maximum delay in situations where the influence of interference is large. Also, increase of the average contention window at the time of retransmission is prohibited, and the window size is fixed. n developing the proposed method, we focused on the experience that the slower the speed of the vehicle, the closer the distance to the surrounding vehicles (and therefore the greater the amount of interference). Furthermore, we focused not on the fact that the CW size is not optimal, but on interference, as the main cause of retransmission. This can reduce the delay determined by the number of retransmissions (the number of transmission failures) and the backoff time. In order to research the effect of the proposed method, we evaluated the performance of a sensor network in a vehicle using a model that causes interference when other vehicles pass around the vehicle at various speeds. The effectiveness of the proposed method was clarified by comparing the conventional method with fixed control for interference and the proposed method with control according to vehicle speed. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | IEEE802.11 WLAN / Interference / Delay / Contention Window / / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 119, no. 461, IN2019-91, pp. 91-96, March 2020. | |
| Paper # | IN2019-91 | |
| Date of Issue | 2020-02-27 (IN) | |
| ISSN | 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 | IN2019-91 |
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| Conference Information | |
| Committee | NS IN |
| Conference Date | 2020-03-05 - 2020-03-06 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Royal Hotel Okinawa Zanpa-Misaki |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | General |
| Paper Information | |
| Registration To | IN |
| Conference Code | 2020-03-NS-IN |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | QoS Control for mission critical communication on automobile with IEEE802.11 wireless LAN against Dynamic Interference |
| Sub Title (in English) | |
| Keyword(1) | IEEE802.11 WLAN |
| Keyword(2) | Interference |
| Keyword(3) | Delay |
| Keyword(4) | Contention Window |
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| Keyword(8) | |
| 1st Author's Name | Takumi Shiohara |
| 1st Author's Affiliation | Nagoya University (Nagoya Univ.) |
| 2nd Author's Name | Tutomu Murase |
| 2nd Author's Affiliation | Nagoya University (Nagoya Univ.) |
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| Speaker | Author-1 |
| Date Time | 2020-03-05 11:40:00 |
| Presentation Time | 20 minutes |
| Registration for | IN |
| Paper # | IN2019-91 |
| Volume (vol) | vol.119 |
| Number (no) | no.461 |
| Page | pp.91-96 |
| #Pages | 6 |
| Date of Issue | 2020-02-27 (IN) |
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