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 Conference Papers (Available on Advance Programs)  (Sort by: Date Descending)
 Results 1 - 20 of 53  /  [Next]  
Committee Date Time Place Paper Title / Authors Abstract Paper #
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
NS 2020-04-17
10:20
Online Online [Encouragement Talk] A Reliable Cooperative Operation Platform based on Mobile Edge Computing
Qinghao Liu, Takafumi Morita (UTokyo), Yoshihisa Kishiyama, Kensuke Miyachi, Takahiro Asai (NTT Docomo, INC.), Ping Du, Akihiro Nakao (UTokyo) NS2020-5
In recent years, there has been much research about intelligent traffic system to improve the safety and efficiency. Coo... [more] NS2020-5
pp.43-49
RCS, SR, SRW
(Joint)
2020-03-04
12:35
Tokyo Tokyo Institute of Technology [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 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
AP 2020-02-20
13:30
Shizuoka Shizuoka Univ. Hamamatsu Campus [Invited Lecture] Downlink Performance and Signal Reception Characteristics using Distributed Vehicle Glass Mounted Antenna for 28 GHz Band in Urban Environment
Minoru Inomata, Tetsuro Imai, Daisuke Kitayama, Takahiro Asai (NTT DOCOMO, INC), Hideaki shoji, Shoichi Takeuchi, Kiyoshi Nobuoka, Toshiki Sayama, Takeshi Motegi, Osamu Kagaya (AGC) AP2019-181
In fifth generation mobile communications system (5G), 28 GHz band is used and the application for cellular-V2X using 5G... [more] AP2019-181
pp.1-6
AP, WPT
(Joint)
2020-01-23
14:10
Kagawa Sunport Hall Takamatsu [Invited Lecture] Study on Path Loss Model for Macrocell Environment using the Percentage of Area Occupied by Buildings for 5G
Koshiro Kitao, Minoru Inomata, Tetsuro Imai, Satoshi Suyama, Takahiro Asai (NTT DOCOMO) AP2019-158
 [more] AP2019-158
pp.45-48
AP, WPT
(Joint)
2020-01-24
10:15
Kagawa Sunport Hall Takamatsu [Invited Lecture] Vehicle Penetration Loss Characteristics for the shinkansen from 2GHz to 28GHz Bands
Minoru Inomata, Tetsuro Imai, Kazushi Muraoka, Nobuhide Nonaka, Satoshi Suyama, Koshiro Kitao, Yukihiko Okumura, Takahiro Asai (NTT DOCOMO, INC), Yoshihiro Matsumura (Central Japan Railway Company) AP2019-168
Mobile telephone operators around the world are now working hard to introduce 5G services. With 5G, 3.7, 4.5, 28 GHz ban... [more] AP2019-168
pp.99-103
NS, RCS
(Joint)
2019-12-19
15:15
Tokushima Memorial Hall of Alumni(Engineering), 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 Memorial Hall of Alumni(Engineering), 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
WPT, AP
(Joint)
2019-01-18
12:50
Aichi Toyota Automobile Museum [Invited Lecture] Basic Study on Propagation Characteristics for Indoor Industrial Scenario
Koshiro Kitao, Tetsuro Imai, Minoru Inomata, Takahiro Asai (NTT DOCOMO) AP2018-163
 [more] AP2018-163
pp.69-73
AP 2018-10-18
13:05
Okayama Okayama Univ. A Study on Radio Propagation Prediction by Using Deep Learning with CNN -- Relationship between Prediction Accuracy and Input Map-Parameters --
Tetsuro Imai, Takahiro Asai (NTT DOCOMO) AP2018-89
Recently, advancement of artificial intelligence has been remarkable, and many applied researches are attracting
attent... [more]
AP2018-89
pp.1-6
AP 2018-10-18
13:30
Okayama Okayama Univ. Investigation of Channel Characteristics using ITU-R Models for 28 GHz Band in Urban Environment
Minoru Inomata, Koshiro Kitao, Tetsuro Imai, Takahiro Asai (NTT DOCOMO) AP2018-90
 [more] AP2018-90
pp.7-12
RCS, NS
(Joint)
2017-12-15
13:15
Hiroshima Aster Plaza A Study of Radio Resource Management based on Service Types for Network Slicing
Daisuke Nojima, Yuki Katsumata, Yoshifumi Morihiro, Takahiro Asai, Akira Yamada, Shigeru Iwashina (NTT DOCOMO) RCS2017-263
In order to efficiently accommodate services with various requirements in the 5G era, we consider end–to-end (E2E) slice... [more] RCS2017-263
pp.71-76
RCS 2017-10-19
14:15
Miyagi Tohoku Institute of Technology [Invited Lecture] Throughput improvement of high density WLAN systems by mobile cooperative control toward 5G
Kenichi Kawamura, Akiyoshi Inoki, Hirantha Abeysekera, Munehiro Matsui, Yasushi Takatori (NTT), Akira Kishida, Yoshifumi Morihiro, Takahiro Asai, Yukihiko Okumura (NTT DOCOMO) RCS2017-179
In this paper, we propose an unlicensed band platform concept which control high density Wireless LAN systems from a net... [more] RCS2017-179
pp.63-68
AP, MW
(Joint)
2017-09-22
15:15
Saitama Saitama University A relation between polarization and radiation characteristics of flexible dielectirc wavguide
Kunihiro Kawai, Atsushi Fukuda, Hiroshi Okazaki, Takahiro Asai, Akira Yamada (NTT DOCOMO) MW2017-78
This paper presents radiation characteristics of bended flexible dielectric waveguides when the millimeter wave signal p... [more] MW2017-78
pp.59-62
MoNA, IPSJ-MBL, IPSJ-DPS, IPSJ-ITS 2017-06-01
12:15
Okinawa Chatan-cho Mihama MS A Study of Handover Reduction based on Moving Direction and Velocity of Users for 5G Multi-layered Networks
Akira Kishida, Yoshifumi Morihiro, Takahiro Asai, Yukihiko Okumura (NTT DOCOMO) MoNA2017-3
In forthcoming fifth-generation (5G) radio access networks, Radio Access Technology (RAT) or cell layer, which represent... [more] MoNA2017-3
pp.61-66
RCS 2017-04-25
13:05
Kagawa Kotohira Onsen Kotosankaku A Study of Handover Reduction considering Moving Direction of UE for 5G Multi-layered Networks with Overlay Structure
Akira Kishida, Yoshifumi Morihiro, Takahiro Asai, Yukihiko Okumura (NTT DOCOMO) RCS2017-22
In forthcoming fifth-generation (5G) radio access networks, Radio Access Technology (RAT) or cell layer, which represent... [more] RCS2017-22
pp.113-118
MoNA, ASN, IPSJ-MBL, IPSJ-UBI [detail] 2017-03-10
09:50
Tokyo University of Tokyo (Hongo Campus) A Study of Handover Reduction based on Moving Direction of User for 5G Multi-layered Networks with Overlay Structure
Akira Kishida, Yoshifumi Morihiro, Takahiro Asai, Yukihiko Okumura (NTT DOCOMO) MoNA2016-42
(To be available after the conference date) [more] MoNA2016-42
pp.223-228
RCS 2016-06-22
16:10
Okinawa Univ. of the Ryukyus A Study of Multi-Domain Radio Resource Management based on Service Types and User Preferences
Akira Kishida, Daisuke Koizumi, Yoshifumi Morihiro, Takahiro Asai (NTT DOCOMO) RCS2016-52
The phantom cell concept is considered towards the realization of 5G radio access network. In the phantom cell concept, ... [more] RCS2016-52
pp.35-40
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