| Presentation | 2019-04-18 28 GHz-Band Experimental Trial of Downlink Massive MIMO in Urban Railway Environment Kazushi Muraoka, Nobuhide Nonaka, Yuta Takahashi, Tatsuki Okuyama, 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 400 MHz 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 experimental trials using 28 GHz-band 5G prototypes implementing beam tracking in rural railroad environments. The experiment was performed with a train running over a straight track. We conducted another experimental trial deploying two 28 GHz-band base stations along with a curved track in urban railroad environment. This report reveals downlink performance results of the experimental trials. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | 5G / Railroad / High Mobility / Massive MIMO / Beamforming |
| Paper # | RCS2019-5 |
| Date of Issue | 2019-04-11 (RCS) |
| Conference Information | |
| Committee | RCS |
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| Conference Date | 2019/4/18(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Noboribetsu Grand Hotel |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Railroad Communications, Inter-Vehicle Communications, Road to Vehicle Communications, Radio Access Technologies, Wireless Communications, etc. |
| Chair | Tomoaki Otsuki(Keio Univ.) |
| Vice Chair | Eisuke Fukuda(Fujitsu Labs.) / Satoshi Suyama(NTT Docomo) / Fumiaki Maehara(Waseda Univ.) |
| Secretary | Eisuke Fukuda(Hokkaido Univ.) / Satoshi Suyama(NTT) / Fumiaki Maehara |
| Assistant | Kazushi Muraoka(NTT DocomoO) / Shinsuke Ibi(Osaka Univ.) / Hiroshi Nishimoto(Mitsubishi Electric) / Koichi Adachi(Univ. of Electro-Comm.) / Osamu Nakamura(Sharp) |
| Paper Information | |
| Registration To | 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) | 28 GHz-Band Experimental Trial of Downlink Massive MIMO in Urban Railway Environment |
| Sub Title (in English) | |
| Keyword(1) | 5G |
| Keyword(2) | Railroad |
| Keyword(3) | High Mobility |
| Keyword(4) | Massive MIMO |
| Keyword(5) | Beamforming |
| 1st Author's Name | Kazushi Muraoka |
| 1st Author's Affiliation | NTT DOCOMO, INC.(NTT DOCOMO) |
| 2nd Author's Name | Nobuhide Nonaka |
| 2nd Author's Affiliation | NTT DOCOMO, INC.(NTT DOCOMO) |
| 3rd Author's Name | Yuta Takahashi |
| 3rd Author's Affiliation | NTT DOCOMO, INC.(NTT DOCOMO) |
| 4th Author's Name | Tatsuki Okuyama |
| 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 | 2019-04-18 |
| Paper # | RCS2019-5 |
| Volume (vol) | vol.119 |
| Number (no) | RCS-8 |
| Page | pp.pp.23-28(RCS), |
| #Pages | 6 |
| Date of Issue | 2019-04-11 (RCS) |