| Presentation | 2021-07-16 Improving Broadcast Ratio For Information Sharing Among Mobile Wireless Terminals Under Environment With Congestions Huan-Bang Li, Takeshi Matsumura, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Device-to-Device (D2D) communications discussed in this paper refer to a particular category of D2D, in which wireless terminals autonomously and directly communicate each other without central control. Peer Aware Communications (PAC) specified in IEEE Std 802.15.8 as well as LTE-V2X PC5 Mode-4 included in 3GPP Release 16 are good examples of such category of D2D. The authors have been conducting research, development and field examination on information sharing systems based on such D2D communications. We have developed location sharing systems separately for the purposes of assisting safe flying of drones and safe sailing of ships, etc. In the developed systems, each wireless terminal is equipped either on a drone or on a ship and broadcasts own location information periodically to neighbor wireless terminals and in the meanwhile receives broadcasted information from other wireless terminals. Generally, it is desired to let wireless terminals share location information with more and more neighbor wireless terminals as possible. However, when the number of neighbor terminals is beyond the capacity of the radio channel used for broadcasting, congestion occurs and delay happens in sending broadcast. Consequently, wireless terminals cannot broadcast location information within anticipated time. It should be noted that not only increase of sensing range but also increase of wireless terminal density may cause congestion. In this paper, we propose a method of adaptively adjusting the carrier sensing range individually at each wireless terminal in accordance to channel congestion condition. Computer simulation is used to examine our proposal and it is shown that both broadcast ratio and discovery ratio are effectively improved. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Device-to-device (D2D) / Carrier sensing / Broadcast / Information sharing / Channel congestion |
| Paper # | RCC2021-37 |
| Date of Issue | 2021-07-07 (RCC) |
| Conference Information | |
| Committee | RCS / SR / NS / SeMI / RCC |
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| Conference Date | 2021/7/14(3days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Online |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Communication and Network Technology of the AI Age, M2M (Machine-to-Machine)，D2D (Device-to-Device)，IoT（Internet of Things）, etc |
| Chair | Eiji Okamoto(Nagoya Inst. of Tech.) / Suguru Kameda(Hiroshima Univ.) / Akihiro Nakao(Univ. of Tokyo) / Koji Yamamoto(Kyoto Univ.) / HUAN-BANG LI(NICT) |
| Vice Chair | Toshihiko Nishimura(Hokkaido Univ.) / Tomoya Tandai(Toshiba) / Fumihide Kojima(NICT) / Osamu Takyu(Shinshu Univ.) / Kentaro Ishidu(NICT) / Kazuto Yano(ATR) / Tetsuya Oishi(NTT) / Kazuya Monden(Hitachi) / Yasunori Owada(NICT) / Shunichi Azuma(Nagoya Univ.) / Koji Ishii(Kagawa Univ.) |
| Secretary | Toshihiko Nishimura(NEC) / Tomoya Tandai(Panasonic) / Fumihide Kojima(Mie Univ.) / Osamu Takyu(Tokai Univ.) / Kentaro Ishidu(NTT) / Kazuto Yano(NTT) / Tetsuya Oishi(Chuo Univ.) / Kazuya Monden(Cyber Univ.) / Yasunori Owada(Waseda Univ.) / Shunichi Azuma(Osaka Univ.) / Koji Ishii(CRIEPI) |
| Assistant | Koichi Adachi(Univ. of Electro-Comm.) / Osamu Nakamura(Sharp) / Manabu Sakai(Mitsubishi Electric) / Masashi Iwabuchi(NTT) / Tatsuki Okuyama(NTT DOCOMO) / Mai Ohta(Fukuoka Univ.) / Taichi Ohtsuji(NEC) / WANG Xiaoyan(Ibaraki Univ.) / Akemi Tanaka(MathWorks) / Kotaro Mihara(NTT) / Yuki Katsumata(NTT DOCOMO) / Akihito Taya(Aoyama Gakuin Univ.) / Yu Nakayama(Tokyo Univ. of Agri. and Tech.) / SHAN LIN(NICT) / Masaki Ogura(Osaka Univ.) |
| Paper Information | |
| Registration To | Technical Committee on Radio Communication Systems / Technical Committee on Smart Radio / Technical Committee on Network Systems / Technical Committee on Sensor Network and Mobile Intelligence / Technical Committee on Reliable Communication and Control |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Improving Broadcast Ratio For Information Sharing Among Mobile Wireless Terminals Under Environment With Congestions |
| Sub Title (in English) | |
| Keyword(1) | Device-to-device (D2D) |
| Keyword(2) | Carrier sensing |
| Keyword(3) | Broadcast |
| Keyword(4) | Information sharing |
| Keyword(5) | Channel congestion |
| 1st Author's Name | Huan-Bang Li |
| 1st Author's Affiliation | National Institute of Information and Communications Technology(NICT) |
| 2nd Author's Name | Takeshi Matsumura |
| 2nd Author's Affiliation | National Institute of Information and Communications Technology(NICT) |
| Date | 2021-07-16 |
| Paper # | RCC2021-37 |
| Volume (vol) | vol.121 |
| Number (no) | RCC-101 |
| Page | pp.pp.65-70(RCC), |
| #Pages | 6 |
| Date of Issue | 2021-07-07 (RCC) |