Committee |
Date Time |
Place |
Paper Title / Authors |
Abstract |
Paper # |
AP, SANE, SAT (Joint) |
2024-07-25 11:50 |
Hokkaido |
Frontier Research in Applied Sciences Building, Hokkaido University (Hokkaido, Online) (Primary: On-site, Secondary: Online) |
Evaluating Inter and Intra-System Interference in HAPS and 5G Coexistence at 2 GHz using 3D Cell Control Technology Yuto Muroki, Yuki Hokazono, Hinata Kohara, Atsunori Shimamura, Ozono Suzuki, Hirofumi Nakajo, Kenji Fukasawa (NTT DOCOMO), Hiromu Kitanozono (SKY Perfect JSAT) SAT2024-23 |
We focus on the provision of communication areas from the sky by satellites and high-altitude platform stations (HAPSs) ... [more] |
SAT2024-23 pp.46-51 |
AP, SANE, SAT (Joint) |
2024-07-25 12:10 |
Hokkaido |
Frontier Research in Applied Sciences Building, Hokkaido University (Hokkaido, Online) (Primary: On-site, Secondary: Online) |
Evaluating Inter and Intra-System Interference in HAPS and 5G Coexistence at 38 GHz using 3D Cell Control Technology Yuki Hokazono, Yuto Muroki, Atsunori Shimamura, Hinata Kohara, Megumi Ozono, Hirofumi Nakajo, Kenji Fukasawa (NTT DOCOMO INC.), Hiromu Kitanozono (SKY Perfect JSAT) SAT2024-24 |
The utilization of the wideband 38 GHz frequencies, as allocated at the 2019 World Radiocommunication Conference(WRC–19)... [more] |
SAT2024-24 pp.52-57 |
NS, RCS (Joint) |
2023-12-15 09:00 |
Fukuoka |
Kyushu Institute of Technology Tobata campus, and Online (Fukuoka, Online) (Primary: On-site, Secondary: Online) |
Development of 38GHz-band Wireless Communication System Using High-Altitude Platform Station (HAPS) for 5G Network
-- Experiments to Verify Handover Delay Requirements for Collaboration between HAPS and Terrestrial System -- Yuto Muroki, Yuki Hokazono, Hinata Kohara, Atsunori Shimamura, Kenji Fukasawa (NTT DOCOMO), Jun Suzuki, Hiromu Kitanozono (SKY Perfect JSAT) RCS2023-192 |
We are focusing on the provision of communication areas from the sky by High-Altitude Platform Stations (HAPSs) to reali... [more] |
RCS2023-192 pp.76-81 |
RCS |
2023-10-20 11:50 |
Kagawa |
Kagawa University (Saiwai-cho Campus), and online (Kagawa, Online) (Primary: On-site, Secondary: Online) |
Development of Extreme Coverage Communication System Extended by Non-Terrestrial Network (NTN)
-- Evaluation of 2-GHz Band Interference between HAPS and Ground Systems in Several Frequency Modes -- Yuto Muroki, Yuki Hokazono, Hinata Kohara, Atsunori Shimamura, Kenji Fukasawa (NTT DOCOMO), Hisayoshi Kano, Munehiro Matsui, Junichi Abe, Fumihiro Yamashita (NTT) RCS2023-144 |
We are focusing on the provision of communication areas from the sky by satellites and High-Altitude Platform Stations (... [more] |
RCS2023-144 pp.79-84 |
AP, SANE, SAT (Joint) |
2023-07-13 11:00 |
Hokkaido |
The Citizen Activity Center (Hokkaido, Online) (Primary: On-site, Secondary: Online) |
38GHz-band radio propagation measurement from lower stratosphere actualizing HAPS communication system Yuki Hokazono, Hinata Kohara, Yuto Muroki, Kenzi Fukasawa (NTT DOCOMO), Jun Suzuki, Hiromu Kitanozono (SKY Perfect JSAT) SAT2023-17 |
High-altitude platform stations (HAPSs) using broadband millimeter waves promise to enable the timely provisioning of th... [more] |
SAT2023-17 pp.41-46 |
AP, SANE, SAT (Joint) |
2023-07-13 11:20 |
Hokkaido |
The Citizen Activity Center (Hokkaido, Online) (Primary: On-site, Secondary: Online) |
Evaluation of 38GHz-Band interference avoidance and rain attenuation compensation technology actualizing HAPS communication system Hinata Kohara, Yuki Hokazono, Yuto Muroki, Kenji Fukasawa (NTT DOCOMO), Jun Suzuki, Hiromu Kitanozono (SKY Perfect JSAT) SAT2023-18 |
We are focusing on the provision of communication areas from the sky by satellites and High-Altitude Platform Stations (... [more] |
SAT2023-18 pp.47-52 |
AP, SANE, SAT (Joint) |
2023-07-13 11:40 |
Hokkaido |
The Citizen Activity Center (Hokkaido, Online) (Primary: On-site, Secondary: Online) |
Development of Extreme Coverage Communication System Extended by Non-Terrestrial Network (NTN)
-- Evaluation of 2GHz-Band Interference Avoidance and Rain Attenuation Compensation Technology Actualizing HAPS Communication System -- Yuto Muroki, Yuki Hokazono, Hinata Kohara, Kenji Fukasawa (NTT DOCOMO), Hisayoshi Kano, Munehiro Matsui, Junichi Abe, Fumihiro Yamashita (NTT) SAT2023-19 |
We are focusing on the provision of communication areas from the sky by satellites and High-Altitude Platform Stations (... [more] |
SAT2023-19 pp.53-58 |
RCS |
2023-06-15 11:10 |
Hokkaido |
Hokkaido University, and online (Hokkaido, Online) (Primary: On-site, Secondary: Online) |
Decentralized Probabilistic Frequency Block-Dependent Base Station Sleep Control for Improving Energy Efficiency Both in Up and Downlinks Hiroya Kuwahara (Tokyo Univ. of Science), Yuto Muroki, Satoshi Nagata (NTT DOCOMO), Kenichi Higuchi (Tokyo Univ. of Science) RCS2023-56 |
In this paper, we propose a decentralized probabilistic method for the frequency block-dependent base station sleep cont... [more] |
RCS2023-56 pp.167-174 |
IT, RCS, SIP |
2023-01-24 17:50 |
Gunma |
Maebashi Terrsa (Gunma, Online) (Primary: On-site, Secondary: Online) |
Multi-agent DQN-Based Activation Control of Base Stations Utilizing Activation States of Neighbor Base Stations Daiki Kato, Takanori Hara (Tokyo Univ. of Science), Yuto Muroki (NTT DOCOMO), Kenichi Higuchi (Tokyo Univ. of Science) IT2022-47 SIP2022-98 RCS2022-226 |
[more] |
IT2022-47 SIP2022-98 RCS2022-226 pp.102-107 |
RCS, AP, UWT (Joint) |
2022-11-17 13:05 |
Fukuoka |
Kyushu University, and Online (Fukuoka, Online) (Primary: On-site, Secondary: Online) |
[Invited Lecture]
Extreme coverage extension in 5G Evolution & 6G: Multi-layered non-terrestrial networks integrating terrestrial networks Yuki Hokazono, Hinata Kohara, Yuto Muroki, Kenji Fukasawa, Yoshihisa Kishiyama, Satoshi Nagata (NTT DOCOMO, INC.) AP2022-167 RCS2022-178 |
Non-terrestrial networks (NTNs) are promising to actualize extreme coverage extension whereby mobile communications can ... [more] |
AP2022-167 RCS2022-178 p.115(AP), p.136(RCS) |
RCS |
2022-10-28 11:20 |
Ehime |
Ehime University, and online (Ehime, Online) (Primary: On-site, Secondary: Online) |
Transmission experiment with delay generator for realization of HAPS network Hinata Kohara, Yuki Hokazono, Yuto Muroki, Kenji Fukasawa, Yoshihisa Kishiyama (NTT DOCOMO), Jun Suzuki, Hiromu Kitanozono (SKY Perfect JSAT) RCS2022-146 |
We are focusing on the provision of communication areas from the sky by satellites and High-Altitude Platform Stations (... [more] |
RCS2022-146 pp.89-94 |
RCS |
2022-06-15 14:55 |
Okinawa |
University of the Ryukyus, Senbaru Campus and online (Okinawa, Online) (Primary: On-site, Secondary: Online) |
Activation Control of Base Stations Based on Distributed DQN for Heterogeneous Networks Daiki Kato (Tokyo Univ. of Science), Yuto Muroki, Nobuhide Nonaka (NTT DOCOMO), Kenichi Higuchi (Tokyo Univ. of Science) RCS2022-39 |
[more] |
RCS2022-39 pp.91-96 |
RCS |
2020-06-24 15:45 |
Online |
Online (Online) |
Interleaver-Linked Receiver Beamforming with Transmitter Channel Equalization in TDD-IDMA-Based Random Access Yuto Muroki (Tokyo Univ. of Science), Yoshihisa KIshiyama (NTT DOCOMO), Kenichi Higuchi (Tokyo Univ. of Science) RCS2020-29 |
This paper proposes a transmission/reception protocol that combines our previously reported interleaver-linked receiver ... [more] |
RCS2020-29 pp.37-42 |
LQE |
2009-05-22 16:10 |
Toyama |
Kanazawa Univ. (Toyama) |
Laser cooling of Yb+ confined in a miniature rf ion trap Masatoshi Nishizaki, Yuto Muroki, Sho Kawajiri (Grad. Sch. Kyoto Univ.), Kazuhiko Sugiyama (Grad. Sch. Kyoto Univ./JST), Yasutaka Imai, Yugo Onoda (Grad. Sch. Kyoto Univ.), Masao Kitano (Grad. Sch. Kyoto Univ./JST) LQE2009-16 |
To realize optical frequency standard with trapped ions, it is necessary to confine the ions into the Lamb-Dicke regime.... [more] |
LQE2009-16 pp.83-86 |
|