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All Technical Committee Conferences (Searched in: All Years)
| Committee | Date Time | Place | Paper Title / Authors | Abstract | Paper # | |
| NS, IN, CS, NV (Joint) |
2024-09-06 10:55 |
Miyagi | Tohoku University + Online (Miyagi) | Network Switching Method to Mitigate Image Degradation in Mixed Video Streams Hirotaka Ujikawa, Yuka Okamoto, Tatsuya Shimada, Tomoaki Yoshida (NTT)  CS2024-40 |
[more] | CS2024-40 pp.3-8 |
| OCS, CS (Joint) |
2024-01-12 11:40 |
Kagoshima | (Kagoshima) | Evaluation of delayed image transmission caused by radio degradation and its compensation method Hirotaka Ujikawa, Yuka Okamoto, Tatsuya Shimada, Tomoaki Yoshida (NTT) CS2023-100 |
(Advance abstract in Japanese is available) [more] | CS2023-100 pp.29-34 |
| CS | 2023-11-09 11:05 |
Shizuoka | plazaverde (Shizuoka) | A study on proactive path switching based on video traffic prediction under co-existed mobile data Yuka Okamoto, Hirotaka Ujikawa, Kota Asaka, Tatsuya Shimada, Tomoaki Yoshida (NTT) CS2023-70 |
Recently, remote robot operation using videos captured by robots is expected to resolve labor shortages. The end-to-end ... [more] | CS2023-70 pp.28-29 |
| CS | 2020-07-16 15:40 |
Hokkaido | Ripura(Rishiri Fuji) (Hokkaido, Online) (Primary: On-site, Secondary: Online) |
A Study on Optical Access Systems for 6G Radio Access Networks Rintaro Harada, Hirotaka Ujikawa, Naotaka Shibata, Shin Kaneko, Jun Terada (NTT) CS2020-17 |
Some studies of radio access networks (RANs) toward the 6th mobile system (6G) that will support society in 2030s have b... [more] | CS2020-17 pp.13-16 |
| CS, OCS (Joint) |
2020-01-17 13:50 |
Oita | Beppu Housensou Hotel (Oita Pref.) (Oita) | Experimental evaluation of bandwidth allocation scheme on TDM-PON for co-existing HLS/LLS base stations Hiroko Nomura, Hirotaka Ujikawa, Hiroyuki Uzawa, Hirotaka Nakamura, Jun Terada (NTT) CS2019-95 |
The ultra-high density deployment of small cells is being considered as a way of increasing the bandwidth of user equipm... [more] | CS2019-95 pp.39-44 |
| CS, CQ (Joint) |
2019-04-18 10:45 |
Osaka | Osaka Univ. Library (Osaka) | Bandwidth allocation of co-existing HLS/LLS base stations for TDM-PON system in 5G-MFH Hiroko Nomura, Hirotaka Ujikawa, Hiroyuki Uzawa, Hirotaka Nakamura, Jun Terada (NTT) CS2019-4 |
The ultra-high density deployment of small cells is being considered as a way of increasing the bandwidth of user equipm... [more] | CS2019-4 pp.19-24 |
| OCS, CS (Joint) |
2017-01-19 17:30 |
Fukuoka | Kyushu Sangyo University (Fukuoka) | [Special Invited Talk]
Virtualization and Modularization Technologies and Standardization in Opitcal Access System
-- Towards Agile Service Adaptation and Cost Reduction -- Kota Asaka, Takumi Harada, Hirotaka Ujikawa, Manabu Yoshino, Noriyuki Oota, Jun-ichi Kani, Ken-ichi Suzuki, Akihiro Otaka (NTT) CS2016-70 |
(Advance abstract in Japanese is available) [more] | CS2016-70 pp.37-42 |
| OCS, CS (Joint) |
2015-01-23 10:45 |
Tokushima | Tokushima University (Tokushima) | Resource cooperation control for access networks Manabu Yoshino, Hirotaka Ujikawa, Ryoma Yasunaga, Tomoaki Yoshida, Ken-Ichi Suzuki, Akihiro Otaka (NTT) CS2014-86 |
(Advance abstract in Japanese is available) [more] | CS2014-86 pp.31-35 |
| CS | 2014-07-03 16:55 |
Kagoshima | Minamitanecho Shoukoukai Kaigishitsu (Kagoshima) | [Invited Talk]
Integrated access and home network devices technique toward network resources optimization
-- Performance demonstration on IEEE 1904.1 complainant system -- Hiroko Nomura, Toshihito Fujiwara, Hirotaka Ujikawa, Masashi Tadokoro, Hiroyuki Uzawa, Yuki Arikawa, Yukikuni Nishida, Ken-Ichi Suzuki, Hideaki Kimura (NTT) CS2014-30 |
The broadband network enables us to provide various services, and various network devices are connected to the UNI (User... [more] | CS2014-30 pp.79-84 |
| CS | 2013-11-14 09:15 |
Hokkaido | Noboribetsu-onsen Dai-ichi Takimotokan (Hokkaido) (Hokkaido) | Optimization of network resources by integrated network device technique
-- Power savings from in-home network devices in optical access and home networks -- Hiroko Nomura, Toshihito Fujiwara, Hirotaka Ujikawa, Masashi Tadokoro, Ken-Ichi Suzuki, Naoto Yoshimoto (NTT) CS2013-44 |
The growth in FTTH subscriber number and rapid adoption of broadband services has raised environmental concerns. Optical... [more] | CS2013-44 pp.21-26 |
| CS | 2013-07-04 10:50 |
Okinawa | Fukugogata-Kokyo-Shisetsu (Yonaguni Island) (Okinawa) | ONU Deep Sleep with Retransmissions of Upper Layer Protocols Hirotaka Ujikawa, Ken-Ichi Suzuki, Naoto Yoshimoto (NTT) CS2013-12 |
The current optical access network has a significant issue that lifeline services like the telephone service provided by... [more] | CS2013-12 pp.25-29 |
| CS | 2012-07-12 10:35 |
Kagoshima | China-cho-Kominkan (Okinoerabu Island) (Kagoshima) | Evaluation of the effect of ONU sleep mechanism on TCP communications in PON Ko Togashi, Hiroki Nishiyama, Nei Kato (Tohoku Univ.), Hirotaka Ujikawa, Ken-Ichi Suzuki, Naoto Yoshimoto (NTT) CS2012-27 |
Due to the increase in contents volume and network participants, the electric consumption of access networks, such as Pa... [more] | CS2012-27 pp.23-28 |
| CS | 2012-07-12 11:00 |
Kagoshima | China-cho-Kominkan (Okinoerabu Island) (Kagoshima) | ONU Sleep Techniques for TCP Congestion Control
-- Applied to IEEE P1904.1 (SIEPON) based 10G-EPON -- Hirotaka Ujikawa, Takashi Yamada, Takeshi Sakamoto, Ken-Ichi Suzuki, Naoto Yoshimoto (NTT) CS2012-28 |
[more] | CS2012-28 pp.29-34 |
| CS, CQ (Joint) |
2012-04-19 16:00 |
Okinawa | Ishigakijima (Okinawa) | [Special Invited Talk]
A New Proposal of Ubiquitous Broadband Networks Relying on PON and WiFi/WiMAX Hiroki Nishiyama, Nei Kato (Tohoku Univ.), Hirotaka Ujikawa, Ken-Ichi Suzuki, Naoto Yoshimoto (NTT) CS2012-8 CQ2012-10 |
In this technical report, the authors present a new aspect of ubiquitous broadband networks relying on Passive Optical N... [more] | CS2012-8 CQ2012-10 pp.41-46(CS), pp.53-58(CQ) |
| CS, OCS (Joint) |
2012-01-27 14:50 |
Mie | ISESHI-KANKOUBUNKAKAIKAN (Mie) | Demonstration of a 10G-EPON system which realizes high-speed transmission, higher splitting ratio, and power saving of ONU. Tsuyoshi Ito, Hirotaka Ujikawa, Takashi Mitsui, Takayoshi Tashiro, Kazutaka Hara, Masashi Tadokoro, Susumu Nishihara, Noriyuki Oota, Takeshi Sakamoto, Ken-Ichi Suzuki (NTT), Hiroshi Sato, Yoshiaki Kojima, Hidenori Mori (NTT-AT), Naoto Yoshimoto (NTT) CS2011-96 |
In this paper, requirements for 10G-EPON system based on system- level interoperability on GE-PON and 10G-EPON (SIEPON) ... [more] | CS2011-96 pp.79-84 |
| CS, CQ (Joint) |
2010-04-26 15:25 |
Aomori | Oirase Keiryu Hotel (Aomori) | A Consideration of Control Interface for Energy-efficient 10G-EPON System Takeshi Sakamoto, Jun-ichi Kani, Ryogo Kubo, Hirotaka Ujikawa, Ken-Ichi Suzuki, Naoto Yoshimoto (NTT) CS2010-2 CQ2010-9 |
[more] | CS2010-2 CQ2010-9 pp.7-12(CS), pp.49-54(CQ) |
| IN, NS (Joint) |
2009-03-04 10:30 |
Okinawa | Okinawa-Zanpamisaki Royal Hotel (Okinawa) | Cooperation between Encoder and Congestion Control for Live Video Streaming over Wireless Networks Hirotaka Ujikawa, Jiro Katto (Waseda Univ.) NS2008-210 |
On attempting live video streaming over wireless networks, an appropriate congestion control which provides robustness a... [more] | NS2008-210 pp.379-384 |
| NS, IN (Joint) |
2008-03-06 10:30 |
Okinawa | Bankoku Shinryokan (Okinawa) | Comparative Experiments of Adaptive Rate Controls for Multiple Video Flows over Ad-hoc Network Hirotaka Ujikawa, Yohsuke Takishima, Jiro Katto (Waseda Univ.) IN2007-186 |
We performed comparative experiments of adaptive rate controls for video transmission over wireless ad-hoc network. TFRC... [more] | IN2007-186 pp.163-168 |
| IPSJ-AVM, MoNA | 2007-07-20 15:00 |
Niigata | Niigata Univ. (Niigata) | A comparative experiment of rate controls for video transmission over wireless ad-hoc networks Hirotaka Ujikawa, Yohsuke Takishima, Kazuhiro Noguchi, Jiro Katto (Waseda Univ.) |
We performed a comparative experiment of some rate controlling protocols for video transmission over wireless ad-hoc net... [more] | MoMuC2007-41 pp.97-102 |
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