| Presentation | 2018-08-09 Field Trial of 28 GHz Band Downlink Massive MIMO in Railway Environment Yuta Takahashi, Hiroyuki Miyazaki, Tatsuki Okuyama, Kazushi Muraoka, Jun Mashino, Satoshi Suyama, Yukihiko Okumura, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Field trials of the fifth-generation (5G) mobile communication system using 28 GHz band at which almost 1-GHz band will be available have been performed all over the world. To realize large coverage at such a high frequency band, beamforming by Massive MIMO (Multiple Input Multiple Output) is necessary to compensate large path loss. Furthermore, beam tracking which adaptively changes beam direction according to user location is an important function to support user mobility. Authors already conducted field trials of 28 GHz-band 5G transmission using a high speed motor car considering use of 5G in railway. However, the environment of the trail was not on railway track but on road. Also it was not impact how position of mobile stations in the railway car affects the performance of 5G transmission. Thus we conducted 5G filed trials in the actual railway environment. This report reveals results of downlink performances using railway cars traveling at 90 km/h. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | 5G / High Mobility / Massive MIMO / Beamforming / Beam Tracking |
| Paper # | RCS2018-133 |
| Date of Issue | 2018-08-02 (RCS) |
| Conference Information | |
| Committee | SAT / RCS |
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| Conference Date | 2018/8/9(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Iwate University |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Wireless Communications, etc. |
| Chair | Hiroyuki Tsuji(NICT) / Tomoaki Otsuki(Keio Univ.) |
| Vice Chair | Hisashi Sujikai(NHK) / Fumihiro Yamashita(NTT) / Eisuke Fukuda(Fujitsu Labs.) / Satoshi Suyama(NTT DoCoMo) / Fumiaki Maehara(Waseda Univ.) |
| Secretary | Hisashi Sujikai(NTT) / Fumihiro Yamashita(NICT) / Eisuke Fukuda(Hokkaido Univ.) / Satoshi Suyama(NTT) / Fumiaki Maehara |
| Assistant | / Kazushi Muraoka(NTT DOCOMO) / Shinsuke Ibi(Osaka Univ.) / Hiroshi Nishimoto(Mitsubishi Electric) / Koichi Adachi(Univ. of Electro-Comm.) / Osamu Nakamura(Sharp) |
| Paper Information | |
| Registration To | Technical Committee on Satellite Telecommunications / Technical Committee on Radio Communication Systems |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Field Trial of 28 GHz Band Downlink Massive MIMO in Railway Environment |
| Sub Title (in English) | |
| Keyword(1) | 5G |
| Keyword(2) | High Mobility |
| Keyword(3) | Massive MIMO |
| Keyword(4) | Beamforming |
| Keyword(5) | Beam Tracking |
| 1st Author's Name | Yuta Takahashi |
| 1st Author's Affiliation | NTT DOCOMO, INC.(NTT DOCOMO) |
| 2nd Author's Name | Hiroyuki Miyazaki |
| 2nd Author's Affiliation | NTT DOCOMO, INC.(NTT DOCOMO) |
| 3rd Author's Name | Tatsuki Okuyama |
| 3rd Author's Affiliation | NTT DOCOMO, INC.(NTT DOCOMO) |
| 4th Author's Name | Kazushi Muraoka |
| 4th Author's Affiliation | NTT DOCOMO, INC.(NTT DOCOMO) |
| 5th Author's Name | Jun Mashino |
| 5th Author's Affiliation | NTT DOCOMO, INC.(NTT DOCOMO) |
| 6th Author's Name | Satoshi Suyama |
| 6th Author's Affiliation | NTT DOCOMO, INC.(NTT DOCOMO) |
| 7th Author's Name | Yukihiko Okumura |
| 7th Author's Affiliation | NTT DOCOMO, INC.(NTT DOCOMO) |
| Date | 2018-08-09 |
| Paper # | RCS2018-133 |
| Volume (vol) | vol.118 |
| Number (no) | RCS-177 |
| Page | pp.pp.13-18(RCS), |
| #Pages | 6 |
| Date of Issue | 2018-08-02 (RCS) |