IEICE TRANSACTIONS on Communications
Field Trial of 28GHz Band 5G Downlink Massive MIMO Employing Beam Tracking in Railway Environment
Summary :
Field trials of the fifth-generation (5G) mobile communication system using 28GHz band at which almost 1GHz bandwidth will be available have been performed all over the world. To realize large coverage with such a high frequency band, beamforming by Massive MIMO (Multiple Input Multiple Output) is necessary to compensate the large path loss. Furthermore, beam tracking which adaptively changes beam direction according to user location, is an important function to support user mobility. In previous works, field trials in subway environment at 25GHz band was carried out, but only fixed beam were employed. On the other hand, the field trials result of 28 GHz-band 5G transmission employing beam tracking in the road environment has been reported. Therefore, we conducted 5G field trials in the actual railway environment using 28GHz band experimental equipment employing beam tracking. This paper reveals the downlink performance achieved by using railway cars traveling at 90km/h. In addition, we show how mobile stations position in the railway car affects the performance of 5G transmission.
- Publication
- IEICE TRANSACTIONS on Communications Vol.E102-B No.8 pp.1411-1417
- Publication Date
- 2019/08/01
- Publicized
- 2019/02/20
- Online ISSN
- 1745-1345
- DOI
- 10.1587/transcom.2018TTP0023
- Type of Manuscript
- Special Section PAPER (Special Section on Technology Trials and Proof-of-Concept Activities for 5G and Beyond)
- Category
Authors
Yuta TAKAHASHI
NTT DOCOMO, INC.
Tatsuki OKUYAMA
NTT DOCOMO, INC.
Kazushi MURAOKA
NTT DOCOMO, INC.
Satoshi SUYAMA
NTT DOCOMO, INC.
Jun MASHINO
NTT DOCOMO, INC.
Yukihiko OKUMURA
NTT DOCOMO, INC.
Keyword
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Yuta TAKAHASHI, Tatsuki OKUYAMA, Kazushi MURAOKA, Satoshi SUYAMA, Jun MASHINO, Yukihiko OKUMURA, "Field Trial of 28GHz Band 5G Downlink Massive MIMO Employing Beam Tracking in Railway Environment" in IEICE TRANSACTIONS on Communications,
vol. E102-B, no. 8, pp. 1411-1417, August 2019, doi: 10.1587/transcom.2018TTP0023.
Abstract: Field trials of the fifth-generation (5G) mobile communication system using 28GHz band at which almost 1GHz bandwidth will be available have been performed all over the world. To realize large coverage with such a high frequency band, beamforming by Massive MIMO (Multiple Input Multiple Output) is necessary to compensate the large path loss. Furthermore, beam tracking which adaptively changes beam direction according to user location, is an important function to support user mobility. In previous works, field trials in subway environment at 25GHz band was carried out, but only fixed beam were employed. On the other hand, the field trials result of 28 GHz-band 5G transmission employing beam tracking in the road environment has been reported. Therefore, we conducted 5G field trials in the actual railway environment using 28GHz band experimental equipment employing beam tracking. This paper reveals the downlink performance achieved by using railway cars traveling at 90km/h. In addition, we show how mobile stations position in the railway car affects the performance of 5G transmission.
URL: https://global.ieice.org/en_transactions/communications/10.1587/transcom.2018TTP0023/_p
Copy
@ARTICLE{e102-b_8_1411,
author={Yuta TAKAHASHI, Tatsuki OKUYAMA, Kazushi MURAOKA, Satoshi SUYAMA, Jun MASHINO, Yukihiko OKUMURA, },
journal={IEICE TRANSACTIONS on Communications},
title={Field Trial of 28GHz Band 5G Downlink Massive MIMO Employing Beam Tracking in Railway Environment},
year={2019},
volume={E102-B},
number={8},
pages={1411-1417},
abstract={Field trials of the fifth-generation (5G) mobile communication system using 28GHz band at which almost 1GHz bandwidth will be available have been performed all over the world. To realize large coverage with such a high frequency band, beamforming by Massive MIMO (Multiple Input Multiple Output) is necessary to compensate the large path loss. Furthermore, beam tracking which adaptively changes beam direction according to user location, is an important function to support user mobility. In previous works, field trials in subway environment at 25GHz band was carried out, but only fixed beam were employed. On the other hand, the field trials result of 28 GHz-band 5G transmission employing beam tracking in the road environment has been reported. Therefore, we conducted 5G field trials in the actual railway environment using 28GHz band experimental equipment employing beam tracking. This paper reveals the downlink performance achieved by using railway cars traveling at 90km/h. In addition, we show how mobile stations position in the railway car affects the performance of 5G transmission.},
keywords={},
doi={10.1587/transcom.2018TTP0023},
ISSN={1745-1345},
month={August},}
Copy
TY - JOUR
TI - Field Trial of 28GHz Band 5G Downlink Massive MIMO Employing Beam Tracking in Railway Environment
T2 - IEICE TRANSACTIONS on Communications
SP - 1411
EP - 1417
AU - Yuta TAKAHASHI
AU - Tatsuki OKUYAMA
AU - Kazushi MURAOKA
AU - Satoshi SUYAMA
AU - Jun MASHINO
AU - Yukihiko OKUMURA
PY - 2019
DO - 10.1587/transcom.2018TTP0023
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E102-B
IS - 8
JA - IEICE TRANSACTIONS on Communications
Y1 - August 2019
AB - Field trials of the fifth-generation (5G) mobile communication system using 28GHz band at which almost 1GHz bandwidth will be available have been performed all over the world. To realize large coverage with such a high frequency band, beamforming by Massive MIMO (Multiple Input Multiple Output) is necessary to compensate the large path loss. Furthermore, beam tracking which adaptively changes beam direction according to user location, is an important function to support user mobility. In previous works, field trials in subway environment at 25GHz band was carried out, but only fixed beam were employed. On the other hand, the field trials result of 28 GHz-band 5G transmission employing beam tracking in the road environment has been reported. Therefore, we conducted 5G field trials in the actual railway environment using 28GHz band experimental equipment employing beam tracking. This paper reveals the downlink performance achieved by using railway cars traveling at 90km/h. In addition, we show how mobile stations position in the railway car affects the performance of 5G transmission.
ER -
English
