| Presentation | 2022-03-11 Delay Evaluation of Fixed Backoff Method for In-Vehicle Wireless Communication Considering In-Vehicle Communication Characteristics Takumi Shiohara, Tutomu Murase, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In this study, we propose an in-vehicle communication propagation model for in-vehicle wireless communication using IEEE 802.11ad, which takes into account multipath and retransmissions due to obstacles in the vehicle using actual measurements from real experiments, and re-evaluate the communication delay quality of the previously proposed method C^5 [1]. In the proposed model, the error rate, which determines the probability of retransmissions, is calculated from the throughput results of actual experiments. 11ad uses a high frequency of 60 GHz, so the radio wave has high directivity and is not easily diffracted. Therefore, obstacles in the vehicle can cause retransmissions from transmission errors. Furthermore, in the narrow and metal-covered communication environment of a vehicle, multipath is extremely common, resulting in retransmissions from transmission errors. As a result, we noticed that the communication delay becomes large. The evaluation results show that the maximum delay is only 22.4% higher than the ideal free-space propagation model, and the C^5 method has a delay quality that can be used for mission-critical applications. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | IEEE 802.11ad / Wireless Harness / In-Vehicle Communication / Multipath / Obstacle / Delay |
| Paper # | CQ2021-137 |
| Date of Issue | 2022-03-02 (CQ) |
| Conference Information | |
| Committee | CQ / IMQ / MVE / IE |
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| Conference Date | 2022/3/9(3days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Online (Zoom) |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Media of five senses, Multimedia, Media experience, Picture codinge, Image media quality, Network,quality and reliability, etc |
| Chair | Jun Okamoto(NTT) / Kenya Uomori(Osaka Univ.) / Masayuki Ihara(RIKEN) / Kazuya Kodama(NII) |
| Vice Chair | Takefumi Hiraguri(Nippon Inst. of Tech.) / Gou Hasegawa(Tohoku Univ.) / Mitsuru Maeda(Canon) / Kiyoshi Kiyokawa(NAIST) / Hiroyuki Bandoh(NTT) / Toshihiko Yamazaki(Univ. of Tokyo) |
| Secretary | Takefumi Hiraguri(NTT) / Gou Hasegawa(Ritsumeikan Univ.) / Mitsuru Maeda(Nagoya Univ.) / Kiyoshi Kiyokawa(NTT) / Hiroyuki Bandoh(Oosaka Inst. of Tech.) / Toshihiko Yamazaki(NTT) |
| Assistant | Yoshiaki Nishikawa(NEC) / Ryoichi Kataoka(KDDI Research) / Kimiko Kawashima(NTT) / Masato Tsukada(NEC) / Takashi Yamazoe(Seikei Univ.) / Naoya Isoyama(NAIST) / Takenori Hara(DNP) / Mitsuhiro Goto(NTT) / Shunsuke Iwamura(NHK) / Shinobu Kudo(NTT) |
| Paper Information | |
| Registration To | Technical Committee on Communication Quality / Technical Committee on Image Media Quality / Technical Committee on Media Experience and Virtual Environment / Technical Committee on Image Engineering |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Delay Evaluation of Fixed Backoff Method for In-Vehicle Wireless Communication Considering In-Vehicle Communication Characteristics |
| Sub Title (in English) | |
| Keyword(1) | IEEE 802.11ad |
| Keyword(2) | Wireless Harness |
| Keyword(3) | In-Vehicle Communication |
| Keyword(4) | Multipath |
| Keyword(5) | Obstacle |
| Keyword(6) | Delay |
| 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.) |
| Date | 2022-03-11 |
| Paper # | CQ2021-137 |
| Volume (vol) | vol.121 |
| Number (no) | CQ-421 |
| Page | pp.pp.198-202(CQ), |
| #Pages | 5 |
| Date of Issue | 2022-03-02 (CQ) |