| Presentation | 2018-07-13 An Experimental Study on Communications and Interference Characteristics of 920MHz Radios in Factory Environments Ryota Bingo, Ryota Ikeuchi, Hiroyuki Yomo, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In recent years, the utilization of wireless communications in factory environments has been attracting significant attention. However, mutual interference can be caused by the coexistence of wireless communications devices following heterogeneous standards, and communications performance can get worse due to factory-specific propagation environments in factory environments. Therefore, in this paper, focusing on Wi-SUN and LoRa, which are the 920 MHz band radio communication standards, we experimentally verify the possibility of mutual interference because of simultaneous transmissions and spectral overlapping in a coexistence environment of Wi-SUN and LoRa. Specifically, we evaluate the packet delivery rate of Wi-SUN and LoRa with the employed channel of LoRa varied in environments where the spectrum of LoRa and Wi-SUN partially overlap. We also evaluate the performance of Wi-SUN and LoRa by experimental measurements in a factory environment where there are a number of industrial machines, metal products, and a huge moving crane. Specifically, we evaluate the packet delivery rate of Wi-SUN and LoRa with varied parameters, such as transmit power of Wi-SUN, distance between Wi-SUN transmitter and receiver, and distance between LoRa transmitter and receiver by allocating channels so that mutual interference between Wi-SUN and LoRa dose not occur. Finally, we discuss parameters that enable the efficient coexistence of Wi-SUN and LoRa, taking into account the impact of factory environments on their packet delivery rate. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Factory environments / 920MHz-band / Wi-SUN / LoRa / Mutual interference |
| Paper # | RCC2018-57,NS2018-81,RCS2018-126,SR2018-57,ASN2018-51 |
| Date of Issue | 2018-07-04 (RCC, NS, RCS, SR, ASN) |
| Conference Information | |
| Committee | ASN / NS / RCS / SR / RCC |
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| Conference Date | 2018/7/11(3days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Hakodate Arena |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Wireless Distributed Network, Machine Learning and AI for Wireless Communications and Networks, M2M (Machine-to-Machine), D2D (Device-to-Device), IoT（Internet of Things）, etc. |
| Chair | Hiraku Okada(Nagoya Univ.) / Yoshikatsu Okazaki(NTT) / Tomoaki Otsuki(Keio Univ.) / Kenta Umebayashi(Tokyo Univ. of Agric. and Tech.) / Kazunori Hayashi(Osaka City Univ.) |
| Vice Chair | Koji Yamamoto(Kyoto Univ.) / Jin Nakazawa(Keio Univ.) / Kazuya Monden(Hitachi) / Akihiro Nakao(Univ. of Tokyo) / Eisuke Fukuda(Fujitsu Labs.) / Satoshi Suyama(NTT DoCoMo) / Fumiaki Maehara(Waseda Univ.) / Masayuki Ariyoshi(NEC) / Suguru Kameda(Tohoku Univ.) / Shunichi Azuma(Nagoya Univ.) / HUAN-BANG LI(NICT) |
| Secretary | Koji Yamamoto(NICT) / Jin Nakazawa(Sophia Univ.) / Kazuya Monden(Kanagawa Inst. of Tech.) / Akihiro Nakao(NTT) / Eisuke Fukuda(Osaka Pref Univ.) / Satoshi Suyama(Hokkaido Univ.) / Fumiaki Maehara(NTT) / Masayuki Ariyoshi(NICT) / Suguru Kameda(ATR) / Shunichi Azuma(Univ. of Electro-Comm.) / HUAN-BANG LI(Kagawa Univ.) |
| Assistant | Masafumi Hashimoto(Osaka Univ.) / Tomoyuki Ota(Hiroshima City Univ.) / Tatsuya Kikuzuki(Fujitu Lab.) / Ryo Nakano(HITACHI) / Yoshifumi Hotta(Mitsubishi Electric) / Kenichi Kashibuchi(NTT) / Kazushi Muraoka(NTT DOCOMO) / Shinsuke Ibi(Osaka Univ.) / Hiroshi Nishimoto(Mitsubishi Electric) / Koichi Adachi(Univ. of Electro-Comm.) / Osamu Nakamura(Sharp) / Gia Khanh Tran(Tokyo Inst. of Tech.) / Syusuke Narieda(Mie Univ.) / Koji Ohshima(Kozo Keikaku Engineering) / Mai Ohta(Fukuoka Univ.) / Teppei Oyama(Fujitsu Lab.) / Toshinori Kagawa(NICT) / Masateru Ogura(NAIST) |
| Paper Information | |
| Registration To | Technical Committee on Ambient intelligence and Sensor Networks / Technical Committee on Network Systems / Technical Committee on Radio Communication Systems / Technical Committee on Smart Radio / 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) | An Experimental Study on Communications and Interference Characteristics of 920MHz Radios in Factory Environments |
| Sub Title (in English) | |
| Keyword(1) | Factory environments |
| Keyword(2) | 920MHz-band |
| Keyword(3) | Wi-SUN |
| Keyword(4) | LoRa |
| Keyword(5) | Mutual interference |
| 1st Author's Name | Ryota Bingo |
| 1st Author's Affiliation | Kansai University(Kansai Univ.) |
| 2nd Author's Name | Ryota Ikeuchi |
| 2nd Author's Affiliation | Kansai University(Kansai Univ.) |
| 3rd Author's Name | Hiroyuki Yomo |
| 3rd Author's Affiliation | Kansai University(Kansai Univ.) |
| Date | 2018-07-13 |
| Paper # | RCC2018-57,NS2018-81,RCS2018-126,SR2018-57,ASN2018-51 |
| Volume (vol) | vol.118 |
| Number (no) | RCC-123,NS-124,RCS-125,SR-126,ASN-127 |
| Page | pp.pp.149-154(RCC), pp.223-228(NS), pp.231-236(RCS), pp.177-182(SR), pp.165-170(ASN), |
| #Pages | 6 |
| Date of Issue | 2018-07-04 (RCC, NS, RCS, SR, ASN) |