| Presentation | 2021-12-16 Maximum Delay Analysis of Fixed Backoff in IEEE 802.11 Considering Significant Interference for In-Vehicle Wireless Communication Takumi Shiohara, Atsuhiro Iwaki, Takeshi Hirai, Kosuke Sanada, Tutomu Murase, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In this research, we propose a delay distribution analysis method for the IEEE 802.11(CSMA/CA) fixed contention window (CW), which has already been proposed for efficiently accommodating a large number of terminals for mission-critical periodic communication with harmful interference. We also show that the delay distribution derived from the analytical model is an upper bound on the delay distribution of the fixed CW method. In the proposed analysis method, we focus on the fact that the transition of the number of terminals and the upper bound of the collision frequency distribution can be approximated by a binomial distribution. The proposed method consists of the following two steps. In the first step, we derive the distribution of the total number of slots required for the departure of all terminals in the target network in the system from a two-dimensional Markov model focusing on the transition of the number of terminals. In the second step, we derive the delay distribution by transforming the obtained total number of slots distribution into real time, focusing on the upper bound of the distribution of the number of events that can occur in a slot time. By the proposed method, we can obtain the communication delay characteristics by theoretical analysis even in the communication model which is very different from the conventional one, where terminals exit from contention one by one due to successful communication. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | IEEE 802.11 / CSMA/CA / Periodic Communication / Mission-Critical / Theoretical Analysis / Delay / Interference |
| Paper # | NS2021-96 |
| Date of Issue | 2021-12-09 (NS) |
| Conference Information | |
| Committee | RCS / NS |
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| Conference Date | 2021/12/16(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Nara-ken Bunka Kaikan and Online |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Multi-hop/Relay/Cooperation, Disaster-resistant wireless network, Sensor/Mesh network, Ad-hoc network, D2D/M2M, Wireless network coding, Handover/AP switching/Connected cell control/Load balancing among base stations/Mobile network dynamic reconfiguration, QoS/QoE assurance, Wireless VoIP, IoT, Edge computing, etc. |
| Chair | Eiji Okamoto(Nagoya Inst. of Tech.) / Akihiro Nakao(Univ. of Tokyo) |
| Vice Chair | Toshihiko Nishimura(Hokkaido Univ.) / Tomoya Tandai(Toshiba) / Fumihide Kojima(NICT) / Tetsuya Oishi(NTT) |
| Secretary | Toshihiko Nishimura(NEC) / Tomoya Tandai(Panasonic) / Fumihide Kojima(NTT) / Tetsuya Oishi(Chuo Univ.) |
| Assistant | Koichi Adachi(Univ. of Electro-Comm.) / Osamu Nakamura(Sharp) / Manabu Sakai(Mitsubishi Electric) / Masashi Iwabuchi(NTT) / Tatsuki Okuyama(NTT DOCOMO) / Kotaro Mihara(NTT) |
| Paper Information | |
| Registration To | Technical Committee on Radio Communication Systems / Technical Committee on Network Systems |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Maximum Delay Analysis of Fixed Backoff in IEEE 802.11 Considering Significant Interference for In-Vehicle Wireless Communication |
| Sub Title (in English) | |
| Keyword(1) | IEEE 802.11 |
| Keyword(2) | CSMA/CA |
| Keyword(3) | Periodic Communication |
| Keyword(4) | Mission-Critical |
| Keyword(5) | Theoretical Analysis |
| Keyword(6) | Delay |
| Keyword(7) | Interference |
| 1st Author's Name | Takumi Shiohara |
| 1st Author's Affiliation | Nagoya University(Nagoya Univ.) |
| 2nd Author's Name | Atsuhiro Iwaki |
| 2nd Author's Affiliation | Mie University(Mie Univ.) |
| 3rd Author's Name | Takeshi Hirai |
| 3rd Author's Affiliation | Osaka University(Osaka Univ.) |
| 4th Author's Name | Kosuke Sanada |
| 4th Author's Affiliation | Mie University(Mie Univ.) |
| 5th Author's Name | Tutomu Murase |
| 5th Author's Affiliation | Nagoya University(Nagoya Univ.) |
| Date | 2021-12-16 |
| Paper # | NS2021-96 |
| Volume (vol) | vol.121 |
| Number (no) | NS-301 |
| Page | pp.pp.1-6(NS), |
| #Pages | 6 |
| Date of Issue | 2021-12-09 (NS) |