| Presentation | 2020-03-06 Millimeter-Wave Base Station Cooperation Technologies in High-Mobility Environments Tatsuki Okuyama, Satoshi Suyama, Nobuhide Nonaka, Yukihiko Okumura, Takahiro Asai, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Commercial services in 5G have already started all over the world. The initial 5G introduces analog beamforming (BF) by Massive MIMO (M-MIMO) to compensate the larger path-loss in millimeter-wave (mmW) bands such as 28 GHz. In order to realize 5G Evolution (5GE), the analog BF will be replaced with hybrid or fully digital BF to improve mmW-band transmission performances. In addition, new base station cooperation technologies are required to provide stable and reliable cell-edge transmission in the mmW bands by hybrid BF, when mobile stations (MSs) travel in high mobility. This paper proposes inter-baseband unit (inter-BBU) cooperation technology and intra-BBU one to cooperate among several M-MIMO antennas. The former exploits two M-MIMO antennas in two BBUs connected to one central unit by limited-bandwidth fronthaul. The latter cooperates two M-MIMO antennas connected to one BBU and proposes enhanced joint precoding (eJP) for hybrid BF with Doppler frequency shift compensation in the transmitter. Computer simulations verify that the eJP can achieve an excellent transmission performance in cases of two and four MSs moving at a velocity of 90 km/h. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | 5G / Millimeter-wave / Base station cooperation / High mobility / Massive MIMO |
| Paper # | RCS2019-383 |
| Date of Issue | 2020-02-26 (RCS) |
| Conference Information | |
| Committee | RCS / SR / SRW |
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| Conference Date | 2020/3/4(3days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Tokyo Institute of Technology |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Mobile Communication Workshop |
| Chair | Tomoaki Otsuki(Keio Univ.) / Masayuki Ariyoshi(NEC) / Satoshi Denno(Okayama Univ.) |
| Vice Chair | Satoshi Suyama(NTT DoCoMo) / Fumiaki Maehara(Waseda Univ.) / Toshihiko Nishimura(Hokkaido Univ.) / Suguru Kameda(Tohoku Univ.) / Osamu Takyu(Shinshu Univ.) / Kentaro Ishidu(NICT) / Keiichi Mizutani(Kyoto Univ.) |
| Secretary | Satoshi Suyama(NTT) / Fumiaki Maehara(Kyushu Univ.) / Toshihiko Nishimura(ATR) / Suguru Kameda(Univ. of Electro-Comm.) / Osamu Takyu(Mie Univ.) / Kentaro Ishidu(Tokyo Inst. of Tech.) / Keiichi Mizutani(Anritsu) |
| Assistant | Kazushi Muraoka(NEC) / Shinsuke Ibi(Doshisha Univ.) / Koichi Adachi(Univ. of Electro-Comm.) / Osamu Nakamura(Sharp) / Manabu Sakai(Mitsubishi Electric) / Mai Ohta(Fukuoka Univ.) / Teppei Oyama(Fujitsu Lab.) / Kentaro Kobayashi(Nagoya Univ.) / Masaaki Fuse(Anritsu) / Tomoki Murakami(NTT) |
| Paper Information | |
| Registration To | Technical Committee on Radio Communication Systems / Technical Committee on Smart Radio / Technical Committee on Short Range Wireless Communications |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Millimeter-Wave Base Station Cooperation Technologies in High-Mobility Environments |
| Sub Title (in English) | |
| Keyword(1) | 5G |
| Keyword(2) | Millimeter-wave |
| Keyword(3) | Base station cooperation |
| Keyword(4) | High mobility |
| Keyword(5) | Massive MIMO |
| 1st Author's Name | Tatsuki Okuyama |
| 1st Author's Affiliation | NTT DOCOMO(NTT DOCOMO) |
| 2nd Author's Name | Satoshi Suyama |
| 2nd Author's Affiliation | NTT DOCOMO(NTT DOCOMO) |
| 3rd Author's Name | Nobuhide Nonaka |
| 3rd Author's Affiliation | NTT DOCOMO(NTT DOCOMO) |
| 4th Author's Name | Yukihiko Okumura |
| 4th Author's Affiliation | NTT DOCOMO(NTT DOCOMO) |
| 5th Author's Name | Takahiro Asai |
| 5th Author's Affiliation | NTT DOCOMO(NTT DOCOMO) |
| Date | 2020-03-06 |
| Paper # | RCS2019-383 |
| Volume (vol) | vol.119 |
| Number (no) | RCS-448 |
| Page | pp.pp.323-328(RCS), |
| #Pages | 6 |
| Date of Issue | 2020-02-26 (RCS) |