| Presentation | 2021-12-13 LoRa Radio Propagation Characteristics over Pseudo-sea Path and their Measurement Systems Yusuke Kakimoto, Shinji Tsuzuki, Masashi Sugimoto, Huan-Bang Li, Kazuhiko Nagao, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | A wireless system using LoRa (Long Range; 920 MHz band; less than 20 mW), which is a kind of LPWA (Low Power Wide Area) wireless technology for IoT, has been developed by the authors for the purpose of collision avoidance between small ships. In order to estimate the communication area of LoRa radio in the sea, the radio propagation model ITU-R P.1546 will be referred in this study. In this paper, the radio propagation characteristics over pseudo-maritime were measured by driving a car along the coastline to verify the degree of agreement with the ITU model. As a result, it was stated that their errors were less than 3 dB in the range of 7≦h2≦12[m], where h2 was the elevation of the car. The results of a preliminary experiment conducted at a power plant for three months were also described, where a logging system was constructed to be installed on actual small ships to measure the propagation characteristics over the sea for a long period of time. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | LPWA / ITU-R P.1546 / 920MHz band |
| Paper # | WBS2021-46,ITS2021-20,RCC2021-53 |
| Date of Issue | 2021-12-06 (WBS, ITS, RCC) |
| Conference Information | |
| Committee | WBS / RCC / ITS |
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| Conference Date | 2021/12/13(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Online |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | Masanori Hamamura(Kochi Univ. of Tech.) / HUAN-BANG LI(NICT) / Masahiro Fujii(Utsunomiya Univ.) |
| Vice Chair | Takashi Shono(INTEL) / Masahiro Fujii(Utsunomiya Univ.) / Shunichi Azuma(Nagoya Univ.) / Koji Ishii(Kagawa Univ.) / Kohei Ohno(Meiji Univ.) / Naohisa Hashimoto(AIST) |
| Secretary | Takashi Shono(National Defence Academy) / Masahiro Fujii(Chiba Univ.) / Shunichi Azuma(CRIEPI) / Koji Ishii(Osaka Univ.) / Kohei Ohno(Akita Prefectural Univ.) / Naohisa Hashimoto(NIT, Tsuruoka College) |
| Assistant | Masayuki Kinoshita(Chiba Univ. of Tech.) / Sun Ran(Ibaraki Univ.) / SHAN LIN(NICT) / Masaki Ogura(Osaka Univ.) / Msataka Imao(Mitsubishi Electric) / Kenshi Saho(Toyama Prefectural Univ.) / Keiji Jimi(Gunma Univ.) |
| Paper Information | |
| Registration To | Technical Committee on Wideband System / Technical Committee on Reliable Communication and Control / Technical Committee on Intelligent Transport Systems Technology |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | LoRa Radio Propagation Characteristics over Pseudo-sea Path and their Measurement Systems |
| Sub Title (in English) | |
| Keyword(1) | LPWA |
| Keyword(2) | ITU-R P.1546 |
| Keyword(3) | 920MHz band |
| 1st Author's Name | Yusuke Kakimoto |
| 1st Author's Affiliation | Ehime University(Ehime Univ.) |
| 2nd Author's Name | Shinji Tsuzuki |
| 2nd Author's Affiliation | Ehime University(Ehime Univ.) |
| 3rd Author's Name | Masashi Sugimoto |
| 3rd Author's Affiliation | Ehime University(Ehime Univ.) |
| 4th Author's Name | Huan-Bang Li |
| 4th Author's Affiliation | National Institute of Information and Communications Technology(NICT) |
| 5th Author's Name | Kazuhiko Nagao |
| 5th Author's Affiliation | National Institute of Technology, Yuge College(National Institute of Technology, Yuge College) |
| Date | 2021-12-13 |
| Paper # | WBS2021-46,ITS2021-20,RCC2021-53 |
| Volume (vol) | vol.121 |
| Number (no) | WBS-295,ITS-296,RCC-297 |
| Page | pp.pp.71-75(WBS), pp.71-75(ITS), pp.71-75(RCC), |
| #Pages | 5 |
| Date of Issue | 2021-12-06 (WBS, ITS, RCC) |