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 Conference Papers (Available on Advance Programs)  (Sort by: Date Descending)
 Results 1 - 19 of 19  /   
Committee Date Time Place Paper Title / Authors Abstract Paper #
CQ, CS
(Joint)
2015-04-21
15:10
Fukuoka Fukuoka Institute of Technology [Special Invited Talk] Optical transmission systems and multiplexing technologies that applied to it
Yoshihiro Ashi (Hitachi) CS2015-5 CQ2015-7
“Multiplexing” is a key technology in the optical transmission systems. A wide variety of methods has been developed alo... [more] CS2015-5 CQ2015-7
pp.23-28(CS), pp.33-38(CQ)
NS, IN
(Joint)
2014-03-07
10:40
Miyazaki Miyazaki Seagia Gradual Migration based on Network Virtualization
Takeshi Shibata, Makoto Kitani, Hayato Hoshihara, Daisuke Mashimo, Toshiaki Suzuki, Masahiro Kimura, Kiyotaka Takahashi, Yutaka Okui, Yoshihiro Ashi, Akihiko Takase (Hitachi) NS2013-248
The conventional scheme to migrate a legacy network into a new network is mainly based on an overlay model that minimize... [more] NS2013-248
pp.415-418
NS, CS, IN
(Joint)
2013-09-13
10:45
Miyagi Tohoku Univ. Research Institute of Electrical Communication 2gokan Study of network global optimization methods
Shinya Fujioka, Katsuyoshi Suzuki, Kenji Fujihira, Tetsuya Uda, Yoshihiro Ashi (HITACHI) CS2013-38
Due to recent service diversification and traffic increase, network optimization is required for effective utilization o... [more] CS2013-38
pp.49-54
PN 2011-11-07
16:30
Tokyo Tokyo Inst. of Tech. (Seiichi Teshima Memorial Meeting Room) [Invited Talk] MPLS-TP Technology Achieving Critical Infrastructure Network in Cloud Computing Environments -- Empirical considerations for the standardization through interoperability tests --
Kiyotaka Takahashi, Daisuke Mashimo, Kenji Fujihira, Masayuki Takase, Kenichi Sakamoto, Yoshihiro Ashi (Hitachi) PN2011-28
 [more] PN2011-28
pp.29-32
CS, NS, IN
(Joint)
2011-09-01
16:00
Miyagi Tohoku University [Special Invited Talk] Service-Transport separated network architecture using MPLS-TP technologies -- Evolution of the network architecture toward the cloud era --
Kenichi Sakamoto, Kiyotaka Takahashi, Takeshi Shibata, Masayuki Takase, Yoshihiro Ashi, Akihiko Takase (Hitachi) NS2011-70 IN2011-66 CS2011-31
We propose the next generation network architecture, which is service-transport separated architecture using packet tech... [more] NS2011-70 IN2011-66 CS2011-31
pp.55-59(NS), pp.15-19(IN), pp.15-19(CS)
NS 2010-04-16
10:50
Kagoshima Kagoshima Univ. Throughput and Delay Test in Packet Transport Network
Taisuke Ueta, Hideki Endo, Masayuki Takase, Takayuki Kanno, Yoshihiro Ashi (Hitachi) NS2010-13
We propose a method of throughput and delay test in order to enable carriers to evaluate throughput and delay between an... [more] NS2010-13
pp.65-70
CQ, CS
(Joint)
2009-04-16
11:40
Okinawa Okinawaken Seinen Kaikan High-precision Time Distribution in Optical Access Networks
Masahiko Mizutani, Yoshihiro Ashi (Hitachi Comm Tech, Ltd.) CS2009-3
 [more] CS2009-3
pp.13-18
CS 2009-01-23
09:35
Okinawa Iriomote Island, Okinawa An Implementation of redundant Passive Optical Networks in combination with packet-based backbone network
Masahiko Mizutani, Yusuke Yajima, Masatoshi Takihiro, Yoshihiro Ashi (Hitachi Communication Tech,Ltd.) CS2008-72
 [more] CS2008-72
pp.87-92
NS 2008-05-16
12:20
Hokkaido Future University-Hakodate Study of Packet Network Design to Guarantee Bandwidth
Hideki Endo, Masayuki Takase, Kenichi Sakamoto (Hitachi, Ltd.), Nobuyuki Yamamoto, Akihiko Tanaka, Takayuki Kanno, Yoshihiro Ashi (Hitachi Communication Technologies, Ltd.) NS2008-16
Leased line services, which have been composed of ATM networks, are so highly reliable that the services can guarantee a... [more] NS2008-16
pp.91-96
OCS, PN, CS
(Joint)
2007-06-15
14:30
Hokkaido Chitose Inst. of Science and Technology IP broadcasting system over GPON
Hiroki Ikeda, Jun Sugawa (Hitachi), Yoshihiro Ashi (Hitachi Communication Technologies), Kenichi Sakamoto (Hitachi) CS2007-12
Service providers are currently seeking to offer high - quality IP broadcasting service on single broadband network infr... [more] CS2007-12
pp.5-10
CS 2007-01-12
11:00
Okinawa Yonaguni (Okinawa) Reliability Improvement in T-MPLS Network
Masayuki Takase, Hideki Endo (Hitachi, Ltd.), Takayuki Kanno, Nobuyuki Yamamoto, Yoshihiro Ashi (Hitachi Communication Technologies, Ltd.) CS2006-91
We propose the highly reliable T-MPLS system in order to realize the end-to-end protection including an access line, whi... [more] CS2006-91
pp.121-126
CS, OCS, PN
(Joint)
2006-05-25
11:25
Shizuoka Shizuoka Univ. A Study of Protection Method in Ring Network
Nobuyuki Yamamoto (Hitachi Communication Technologies,Ltd), Masayuki Takase (Hitachi,Ltd), Takayuki Kanno (Hitachi Communication Technologies,Ltd), Hideki Endo (Hitachi,Ltd), Yoshihiro Ashi (Hitachi Communication Technologies,Ltd) CS2006-15
Recently, broadband access network is widely used, and the broadcasting service such as TV program distribution begins t... [more] CS2006-15
pp.7-12
CS, CQ
(Joint)
2006-04-18
10:15
Akita Akita Univ. The bandwidth management on the G-PON system and the multiplexer
Hideki Endo, Masahiko Mizutani, Masayuki Takase, Kenichi Sakamoto (Hitachi, Ltd.), Yoshihiro Ashi (Hitachi Communication Technologies, Ltd.) CS2006-13
 [more] CS2006-13
pp.63-68
CS 2006-01-16
13:30
Oita Yufugo-kan (Oita) Study of forwarding contol mechanism of OAM frames for the Ether OAM
Masahiko Mizutani (Hitachi), Atsushi Iwamura (Hitachi COM), Kenichi Sakamoto (Hitachi), Yoshihiro Ashi (Hitachi COM)
The Ethernet network is widely spread and adopted to the access portion or metro area for the reason of its cost advanta... [more] CS2005-72
pp.1-5
CS 2006-01-16
13:55
Oita Yufugo-kan (Oita) A Study of Layer 2 Access Security Function for Optical Access System
Munetoshi Tsuge (Hitachi), Ryou Nakamura (Hitachi Comm. Tech.), Kenichi Sakamoto (Hitachi), Toru Kazawa, Yoshihiro Ashi (Hitachi Comm. Tech.)
We studied functions for an optical access system combined with a layer 2 switch on a layer 2 access network, where IP a... [more] CS2005-73
pp.7-12
RCS, CS
(Joint)
2005-08-26
14:20
Tokyo Tokyo Inst. Tech. A Study for Mutiplexing Technique of Mutiple TDM Frames for G-PON
Kenichi Sakamoto, Masayuki Takase, Masahiko Mizutani (Hitachi), Toru Kazawa, Yoshihiro Ashi (Hitachi Comm. Tech.)
Economical PON system, Giga-bit Ethernet PON (GE-PON) standardized by IEEE, has the capability of wide-band communicatio... [more] CS2005-15
pp.21-26
CS 2004-10-28
10:45
Hokkaido Lake Akan, Hokkaido Introduction of detail mechanism of Ether OAM(Y.17ethoam)
Atsushi Iwamura, Yoshihiro Ashi (Hitachi COM)
The Ethernet network is widely spread and adopted to the access portion or metro area for the reason of its cost advanta... [more] CS2004-85
pp.35-40
NS, CS, IN 2004-09-03
10:30
Miyagi Tohoku University A Consideration of Protection Function for CES on TDM over Ether
Atsushi Iwamura, Akihiko Tanaka, Toshihiko Fujita, Yoshihiro Ashi (HITACHI COM)
The Ethernet network is widely spread and adopted to the access portion or metro area for the reason of its economical a... [more] NS2004-104 IN2004-63 CS2004-59
pp.19-24
CS 2004-07-09
14:05
Niigata Nagaoka University of Technology A Development of Circuit Emulation Function on TDM over Ethernet
Atsushi Iwamura, Akihiko Tanaka, Toshihiko Fujita, Yoshihiro Ashi (Hitachi COM)
The Ethernet network is widely spread and adopted to the access portion or metro area for the reason of its economical a... [more] CS2004-35
pp.39-44
 Results 1 - 19 of 19  /   
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