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| Presentation | 2020-03-06 09:00 Millimeter-Wave Base Station Cooperation Technologies in High-Mobility Environments Tatsuki Okuyama, Satoshi Suyama, Nobuhide Nonaka, Yukihiko Okumura, Takahiro Asai (NTT DOCOMO)  RCS2019-383 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (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) |
| (in English) | 5G / Millimeter-wave / Base station cooperation / High mobility / Massive MIMO / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 119, no. 448, RCS2019-383, pp. 323-328, March 2020. | |
| Paper # | RCS2019-383 | |
| Date of Issue | 2020-02-26 (RCS) | |
| ISSN | Online edition: ISSN 2432-6380 | |
| Copyright and reproduction |
All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034) | |
| Download PDF | RCS2019-383 |
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| Conference Information | |
| Committee | RCS SR SRW |
| Conference Date | 2020-03-04 - 2020-03-06 |
| 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 |
| Paper Information | |
| Registration To | RCS |
| Conference Code | 2020-03-RCS-SR-SRW |
| Language | Japanese |
| 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 |
| Keyword(6) | |
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| Keyword(8) | |
| 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) |
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| Speaker | Author-1 |
| Date Time | 2020-03-06 09:00:00 |
| Presentation Time | 20 minutes |
| Registration for | RCS |
| Paper # | RCS2019-383 |
| Volume (vol) | vol.119 |
| Number (no) | no.448 |
| Page | pp.323-328 |
| #Pages | 6 |
| Date of Issue | 2020-02-26 (RCS) |
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