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 Conference Papers (Available on Advance Programs)  (Sort by: Date Descending)
 15件中 1~15件目  /   
Committee Date Time Place Paper Title / Authors Abstract Paper #
CS, OCS
(Joint)
2020-01-17
13:50
Oita   Experimental evaluation of bandwidth allocation scheme on TDM-PON for co-existing HLS/LLS base stations in mobile fronthaul
Hiroko Nomura, Hirotaka Ujikawa, Hiroyuki Uzawa, Hirotaka Nakamura, Jun Terada (NTT)
(Advance abstract in Japanese is available) [more]
CS, CQ
(Joint)
2019-04-18
10:45
Osaka Osaka Univ. Library 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 [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 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 [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) 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) 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) 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) 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 [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 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 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 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 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. 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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