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 Conference Papers (Available on Advance Programs)  (Sort by: Date Descending)
 Results 1 - 20 of 78  /  [Next]  
Committee Date Time Place Paper Title / Authors Abstract Paper #
RCS, SR, SRW
(Joint)
2022-03-03
10:45
Online Online Radio Video Transmission Experiments Using Shinkansen Test Train Running at 360 km/h toward 5G Evolution
Nobuhide Nonaka, Satoshi Suyama, Tatsuki Okuyama, Hama yuto, Daisuke Kitayama, Takahiro Asai (NTT DOCOMO), Kenichiro Kamohara, Fumitoshi Abe, Reiji Ishima (JR East) RCS2021-273
 [more] RCS2021-273
pp.120-125
RCS, NS
(Joint)
2021-12-16
13:25
Nara Nara-ken Bunka Kaikan and Online
(Primary: On-site, Secondary: Online)
Performance Evaluations of Transmitter and Receiver Hybrid Beamforming in Massive MIMO at 100 GHz-band
Nobuhide Nonaka, Satoshi Suyama, Tatsuki Okuyama, Takahiro Asai (NTT DOCOMO) RCS2021-179
 [more] RCS2021-179
pp.24-29
RCS, NS
(Joint)
2021-12-16
13:50
Nara Nara-ken Bunka Kaikan and Online
(Primary: On-site, Secondary: Online)
Issues of Sub-Terahertz-Band Radio Access Technologies for 6G
Hayato Fukuzono (NTT), Satoshi Suyama (NTT DOCOMO), Doohwan Lee, Daisei Uchida (NTT), Tatsuki Okuyama (NTT DOCOMO), Masashi Iwabuchi, Jun Mashino (NTT), Yoshihisa Kishiyama (NTT DOCOMO) RCS2021-180
One of the requirements for the sixth generation mobile communication system (6G) is extreme high data rate and capacity... [more] RCS2021-180
pp.30-34
AP, RCS
(Joint)
2021-11-12
09:30
Nagasaki NBC-Bekkan (Nagasaki)
(Primary: On-site, Secondary: Online)
Experimental Trials Using Shinkansen Test Train Running at 360 km/h toward 5G Evolution
Nobuhide Nonaka, Satoshi Suyama, Tatsuki Okuyama, Yuto Hama, Daisuke Kitayama, Takahiro Asai (NTT DOCOMO), Shoji Itoh (Ericsson Japan), Anders Carlsson, Johan Furuskog, Magnus Wikstrom, Qiang Zhang (Ericsson), Kenichiro Kamohara, Fumitoshi Abe, Reiji Ishima (JR EAST) RCS2021-166
 [more] RCS2021-166
pp.118-123
RCS 2021-10-22
11:15
Online Online Performance Evaluation of Two Directions in Base Station Antennas by 28 GHz-Band Outdoor Experiments of Base Station Cooperation Technology in High-Mobility Environments
Tatsuki Okuyama, Satoshi Suyama, Nobuhide Nonaka, Takahiro Asai (NTT DOCOMO) RCS2021-134
 [more] RCS2021-134
pp.82-87
RCS 2021-10-22
15:00
Online Online [Poster Presentation] NTT DOCOMO's Activities for 5G Evolution & 6G
Satoshi Suyama, Tatsuki Okuyama, Nobuhide Nonakaka, Takahiro Asai (NTT DOCOMO) RCS2021-142
 [more] RCS2021-142
p.126
RCS 2021-06-25
14:35
Online Online Outdoor Experimental Trials of 28 GHz-Band Base Station Cooperation Technologies in High-Mobility Environments with Mobile Stations
Tatsuki Okuyama, Satoshi Suyama, Nobuhide Nonaka, Takahiro Asai (NTT DOCOMO) RCS2021-74
 [more] RCS2021-74
pp.261-266
RCS, IN, NV
(Joint)
2021-05-27
16:00
Online Online 6G System-Level Simulators in 100 GHz Band
Tatsuki Okuyama, Satoshi Suyama, Nobuhide Nonaka, Takahiro Asai (NTT DOCOMO) RCS2021-22
 [more] RCS2021-22
pp.35-40
RCS, SR, SRW
(Joint)
2021-03-05
10:30
Online Online Performance Evaluation of Base Station Cooperation Technologies in Millimeter-Wave Bands at Variable Base Station Deployments under High-Mobility Environments
Tatsuki Okuyama, Satoshi Suyama, Nobuhide Nonaka, Takahiro Asai (NTT DOCOMO) RCS2020-249
Commercial services of 5th generation mobile communication system (5G) are expanding. In 5G, Massive MIMO -based beamfor... [more] RCS2020-249
pp.207-211
NS, RCS
(Joint)
2020-12-18
11:15
Online Online A Study of 6G Radio Access Technologies for Achieving 100 Gbps Data Rate by Extreme Wideband Transmission Using Higher Frequency Bands
Satoshi Suyama, Tatsuki Okuyama, Yoshihisa Kishiyama, Nobuhide Nonaka, Takahiro Asai (NTT DOCOMO) RCS2020-146
In sixth-generation (6G) mobile communication system, it is expected that a extreme hgih data rate coomunication with a ... [more] RCS2020-146
pp.66-71
RCS 2020-06-26
14:30
Online Online 5G Evolution Experimental Trial on Base Station Cooperation Technologies using 28GHz-Band Digital BF High-Mobility Environments
Tatsuki Okuyama, Nobuhide Nonaka, Satoshi Suyama, Yukihiko Okumura, Takahiro Asai (NTT DOCOMO) RCS2020-48
 [more] RCS2020-48
pp.151-156
RCS 2020-06-26
14:55
Online Online Guaranteed Mobile Communications Using Massive MIMO with Hybrid Beamforming for 5G Evolution
Nobuhide Nonaka, Tatsuki Okuyama, Satoshi Suyama, Yukihiko Okumura, Takahiro Asai (NTT DOCOMO) RCS2020-49
 [more] RCS2020-49
pp.157-162
RCS, SR, SRW
(Joint)
2020-03-04
12:35
Tokyo Tokyo Institute of Technology
(Cancelled but technical report was issued)
[Technology Exhibit] DOCOMO's Activities Looking to 5G Evolution and 6G
Tatsuki Okuyama, Daisuke Kitayama, Nobuhide Nonaka, Satoshi Suyama, Yoshihisa Kishiyama, Yukihiko Okumura, Takahiro Asai (NTT DOCOMO) RCS2019-330 SR2019-114 SRW2019-60
(To be available after the conference date) [more] RCS2019-330 SR2019-114 SRW2019-60
p.55(RCS), p.7(SR), p.7(SRW)
RCS, SR, SRW
(Joint)
2020-03-06
09:00
Tokyo Tokyo Institute of Technology
(Cancelled but technical report was issued)
Millimeter-Wave Base Station Cooperation Technologies in High-Mobility Environments
Tatsuki Okuyama, Satoshi Suyama, Nobuhide Nonaka, Yukihiko Okumura, Takahiro Asai (NTT DOCOMO) RCS2019-383
Commercial services in 5G have already started all over the world. The initial 5G introduces analog beamforming (BF) by ... [more] RCS2019-383
pp.323-328
NS, RCS
(Joint)
2019-12-19
15:15
Tokushima Tokushima Univ. [Invited Lecture] Radio Access Network Exploiting Higher Frequency Bands for 5G Evolution and Beyond
Satoshi Suyama, Tatsuki Okuyama, Nobuhide Nonaka, Takahiro Asai, Yukihiko Okumura (NTT DOCOMO) NS2019-145 RCS2019-248
A commercial service in fifth-generation (5G) mobile communication system will finally start from spring in 2020 by usin... [more] NS2019-145 RCS2019-248
p.61
NS, RCS
(Joint)
2019-12-20
14:55
Tokushima Tokushima Univ. 28GHz Band 5G Experimental Trial in High Mobility Environment Using the Shinkansen
Nopbuhide Nonaka, Kazushi Muraoka, Tatsuki Okuyama, Satoshi Suyama, Yukihiko Okumura, Takahiro Asai (NTT DOCOMO), Yoshihiro Matsumura (JR Central) RCS2019-264
Commercial services in fifth-generation (5G) mobile communication system will start by using 3.7 GHz, 4.5 GHz, and 28 GH... [more] RCS2019-264
pp.145-150
SeMI, RCS, NS, SR, RCC
(Joint)
2019-07-11
10:00
Osaka I-Site Nanba(Osaka) Performance Evaluation of Downlink Multi-user MIMO with Moving User Equipment using Low-SHF-Band C-RAN Massive MIMO System
Jiang Yi, Kohei Izui, Kenichiro Yamazaki (NEC), Tatsuki Okuyama, Kazushi Muraoka, Jun Mashino, Satoshi Suyama, Yukihiko Okumura (NTT DOCOMO, INC.) RCS2019-111
In order to tackle rapid increase of data traffic and diversification of mobile service, 5G wireless access system intro... [more] RCS2019-111
pp.57-62
RCS 2019-06-21
16:25
Okinawa Miyakojima Hirara Port Terminal Building Experimental Study of High-Capacity Technologies for 5G Ultra High-Density Distributed Antenna Systems -- Verification of coordinated radio resource scheduling algorithm in up to 32 multi-stream transmission --
Takaharu Kobayashi, Shinya Kumagai, Masafumi Tsutsui, Chiyoshi Akiyama, Takashi Dateki, Hiroyuki Seki, Morihiko Minowa (Fujitsu), Tatsuki Okuyama, Jun Mashino, Satoshi Suyama, Yukihiko Okumura (DOCOMO) RCS2019-99
In 5G mobile communication systems, an effective high-capacity technology is expected by using high-density small cells.... [more] RCS2019-99
pp.365-370
RCS 2019-04-18
10:55
Hokkaido Noboribetsu Grand Hotel Performance Evaluation of Intersite Coordination Scheme under High Speed Transportation Environment
Tatsuki Okuyama, Satoshi Suyama, Jun Mashino, Yukihiko Okumura (DOCOMO) RCS2019-4
 [more] RCS2019-4
pp.17-22
RCS 2019-04-18
11:20
Hokkaido Noboribetsu Grand Hotel 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 (NTT DOCOMO) RCS2019-5
Field trials of the fifth-generation (5G) mobile communication system using 28 GHz band at which 400 MHz band will be av... [more] RCS2019-5
pp.23-28
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