Ken-ichi SATO


Dynamic Path Provisioning and Disruption-Free Reoptimization Algorithms for Bandwidth on-Demand Services Considering Fairness
Masahiro NAKAGAWA Hiroshi HASEGAWA Ken-ichi SATO 
Publication:   
Publication Date: 2017/04/01
Vol. E100-B  No. 4  pp. 536-547
Type of Manuscript:  PAPER
Category: Network
Keyword: 
dynamic network controlfairness between pathshitless reroutingmake before break routing
 Summary | Full Text:PDF(2.5MB)

Survivable Grouped Routing Optical Networks with Dedicated Path Protection
Hiroshi HASEGAWA Yojiro MORI Ken-ichi SATO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2016/07/01
Vol. E99-B  No. 7  pp. 1435-1444
Type of Manuscript:  PAPER
Category: Network
Keyword: 
grouped routing optical networkscoarse granular routingresiliencydedicated path protectionimpairment-aware
 Summary | Full Text:PDF(1.6MB)

Differential Reliability Path Accommodation Design and Reconfiguration in Virtualized Multi-Layer Transport Network
Akihiro KADOHATA Takafumi TANAKA Atsushi WATANABE Akira HIRANO Hiroshi HASEGAWA Ken-ichi SATO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2015/11/01
Vol. E98-B  No. 11  pp. 2151-2159
Type of Manuscript:  Special Section PAPER (Special Section on Network Systems for Virtualized Environment)
Category: 
Keyword: 
multi-layer transport networknetwork virtualizationrobustness and reconfiguration
 Summary | Full Text:PDF(2.8MB)

Pre-Adjustment Rerouting for Wavelength Defragmentation in Optical Transparent WDM Networks
Akihiro KADOHATA Atsushi WATANABE Akira HIRANO Hiroshi HASEGAWA Ken-ichi SATO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2015/10/01
Vol. E98-B  No. 10  pp. 2014-2021
Type of Manuscript:  PAPER
Category: Fiber-Optic Transmission for Communications
Keyword: 
optical transparent wdm networksreconfigurationdefragmentation
 Summary | Full Text:PDF(1.7MB)

Efficient Shared Protection Network Design Algorithm that Iterates Path Relocation with New Resource Utilization Metrics
Masakazu SATO Hiroshi HASEGAWA Ken-ichi SATO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2013/04/01
Vol. E96-B  No. 4  pp. 956-966
Type of Manuscript:  PAPER
Category: Fiber-Optic Transmission for Communications
Keyword: 
optical path networkrouting and wavelength assignmentshared protectioniterative re-optimization
 Summary | Full Text:PDF(3.8MB)

Impact of Elastic Optical Paths That Adopt Distance Adaptive Modulation to Create Efficient Networks
Tatsumi TAKAGI Hiroshi HASEGAWA Ken-ichi SATO Yoshiaki SONE Akira HIRANO Masahiko JINNO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2012/12/01
Vol. E95-B  No. 12  pp. 3793-3801
Type of Manuscript:  PAPER
Category: Fiber-Optic Transmission for Communications
Keyword: 
elastic optical path networkdistance adaptive modulationrouting and spectrum assignmentnetwork design
 Summary | Full Text:PDF(2.1MB)

Optical Fast Circuit Switching Networks Employing Dynamic Waveband Tunnel
Takahiro OGAWA Hiroshi HASEGAWA Ken-ichi SATO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2012/10/01
Vol. E95-B  No. 10  pp. 3139-3148
Type of Manuscript:  PAPER
Category: Fiber-Optic Transmission for Communications
Keyword: 
hierarchical optical path networkoptical circuit switchingrouting and wavelength assignmentwavebanddynamic control
 Summary | Full Text:PDF(3.5MB)

Router Power Reduction through Dynamic Performance Control Based on Traffic Predictions
Hiroyuki ITO Hiroshi HASEGAWA Ken-ichi SATO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2012/10/01
Vol. E95-B  No. 10  pp. 3130-3138
Type of Manuscript:  PAPER
Category: Energy in Electronics Communications
Keyword: 
routerperformance controlenergy efficiency
 Summary | Full Text:PDF(1.7MB)

Effects of Optical Layer Protection Granularity in Survivable Hierarchical Optical Path Network
Yoshiyuki YAMADA Hiroshi HASEGAWA Ken-ichi SATO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2012/09/01
Vol. E95-B  No. 9  pp. 2959-2963
Type of Manuscript:  LETTER
Category: Network
Keyword: 
hierarchical optical path networkwavebandsurvivabilityprotection
 Summary | Full Text:PDF(663.1KB)

Optical Node Architectures That Utilize Dedicated Add/Drop Switches to Realize Colorless, Directionless and Contentionless Capability
Yoshiyuki YAMADA Hiroshi HASEGAWA Ken-ichi SATO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2012/04/01
Vol. E95-B  No. 4  pp. 1307-1316
Type of Manuscript:  PAPER
Category: Fiber-Optic Transmission for Communications
Keyword: 
optical cross-connectcolorless/directionless/contentionlesswavebandmulti-layer optical paths
 Summary | Full Text:PDF(1.4MB)

Virtual Fiber Networking and Impact of Optical Path Grooming on Creating Efficient Layer One Services
Fumisato NARUSE Yoshiyuki YAMADA Hiroshi HASEGAWA Ken-ichi SATO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2012/03/01
Vol. E95-B  No. 3  pp. 723-729
Type of Manuscript:  Special Section PAPER (Special Section on New/Next Generation Photonic Networking and Future Networks)
Category: 
Keyword: 
wavebandoptical path groomingvirtual fiber networkingvirtual private networklayer one service
 Summary | Full Text:PDF(1.1MB)

SAR-Probe Calibration System Using Reference Dipole Antenna in Tissue-Equivalent Liquid
Nozomu ISHII Yukihiro MIYOTA Ken-ichi SATO Lira HAMADA Soichi WATANABE 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2012/01/01
Vol. E95-B  No. 1  pp. 60-68
Type of Manuscript:  Special Section PAPER (Special Section on Recent Progress in Antennas and Propagation in Conjunction with Main Topics of ISAP2010)
Category: Antenna Measurement
Keyword: 
specific absorption rate (SAR)probecalibrationtissue-equivalent liquidtwo-antenna methodgain
 Summary | Full Text:PDF(1.8MB)

Compact Matrix-Switch-Based Hierarchical Optical Path Cross-Connect with Colorless Waveband Add/Drop Ratio Restriction
Ryosuke HIRAKO Kiyo ISHII Hiroshi HASEGAWA Ken-ichi SATO Osamu MORIWAKI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2011/04/01
Vol. E94-B  No. 4  pp. 918-927
Type of Manuscript:  Special Section PAPER (Special Section on Photonic Network Technologies in Terabit Network Era)
Category: 
Keyword: 
hierarchical optical cross-connectwavebandadd/drop ratioMUX/DMUXAWG
 Summary | Full Text:PDF(3.2MB)

Optical Cross-Connect Switch Architectures for Hierarchical Optical Path Networks
Shoji KAKEHASHI Hiroshi HASEGAWA Ken-ichi SATO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2008/10/01
Vol. E91-B  No. 10  pp. 3174-3184
Type of Manuscript:  PAPER
Category: Switching for Communications
Keyword: 
wavebandwaveband cross-connectoptical cross-connect
 Summary | Full Text:PDF(1.6MB)

Simultaneous Measurement of Antenna Gain and Complex Permittivity of Liquid in Near-Field Region Using Weighted Regression
Nozomu ISHII Hiroki SHIGA Naoto IKARASHI Ken-ichi SATO Lira HAMADA Soichi WATANABE 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2008/06/01
Vol. E91-B  No. 6  pp. 1831-1837
Type of Manuscript:  Special Section PAPER (Special Section on 2007 International Symposium on Antennas and Propagation)
Category: Measurements
Keyword: 
SARnear-field regionabsolute gainFriis transmission equationleast square method
 Summary | Full Text:PDF(517.2KB)

Formulation of Waveguide Connection for Waveband MUX/DEMUX Using Concatenated Arrayed-Waveguide Gratings
Shoji KAKEHASHI Hiroshi HASEGAWA Ken-ichi SATO Osamu MORIWAKI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2007/10/01
Vol. E90-B  No. 10  pp. 2950-2952
Type of Manuscript:  LETTER
Category: Fiber-Optic Transmission for Communications
Keyword: 
wavebandwaveband filterAWGMUX/DEMUX
 Summary | Full Text:PDF(677.1KB)

A Method of Measuring Gain in Liquids Based on the Friis Transmission Formula in the Near-Field Region
Nozomu ISHII Takuhei AKAGAWA Ken-ichi SATO Lira HAMADA Soichi WATANABE 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2007/09/01
Vol. E90-B  No. 9  pp. 2401-2407
Type of Manuscript:  Special Section PAPER (Special Section on 2006 International Symposium on Antennas and Propagation)
Category: Measurements
Keyword: 
Friis transmission formulaSAR probe calibrationconducting mediumFresnel approximationfar-field gain
 Summary | Full Text:PDF(484.1KB)

Prospects and Challenges of Multi-Layer Optical Networks
Ken-ichi SATO Hiroshi HASEGAWA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2007/08/01
Vol. E90-B  No. 8  pp. 1890-1902
Type of Manuscript:  SURVEY PAPER
Category: Traffic Engineering and Multi-Layer Networking
Keyword: 
optical pathwavebandphotonic networkmulti-layer optical pathsoptical cross-connect
 Summary | Full Text:PDF(1.4MB)

Recent Developments in and Challenges of Photonic Networking Technologies
Ken-ichi SATO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2007/03/01
Vol. E90-B  No. 3  pp. 454-467
Type of Manuscript:  INVITED SURVEY PAPER
Category: 
Keyword: 
photonic networksphotonic network designmulti-layer optical paths
 Summary | Full Text:PDF(2.2MB)

FOREWORD
Ken-ichi SATO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2005/10/01
Vol. E88-B  No. 10  pp. 3831-3831
Type of Manuscript:  FOREWORD
Category: 
Keyword: 
 Summary | Full Text:PDF(42.1KB)

Network Design for Multi-Layered Photonic IP Networks Considering IP Traffic Growth
Shigeru KANEDA Tomohiko UYEMATSU Naohide NAGATSU Ken-ichi SATO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2004/02/01
Vol. E87-B  No. 2  pp. 302-309
Type of Manuscript:  PAPER
Category: Internet
Keyword: 
GMPLS (Generalized Multi-Protocol Label Switching)LSP (Label Switched Path)network designphotonic networkwavelength routing
 Summary | Full Text:PDF(655.3KB)

Fast Restoration on Network Control Plane Established through Photonic MPLS Routers
Katsuhiro SHIMANO Akio SAHARA Kazuhiro NOGUCHI Masafumi KOGA Yoshihiro TAKIGAWA Ken-ichi SATO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2003/05/01
Vol. E86-B  No. 5  pp. 1522-1529
Type of Manuscript:  Special Section PAPER (Joint Special Issue on Recent Progress in Optoelectronics and Communications)
Category: 
Keyword: 
photonic networkrestorationoptical cross-connectdistributed network control
 Summary | Full Text:PDF(1.3MB)

Robust IP Backbone Network Utilizing WDM Optical Paths
Atsushi WATANABE Satoru OKAMOTO Ken-ichi SATO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1999/08/25
Vol. E82-B  No. 8  pp. 1115-1120
Type of Manuscript:  Special Section PAPER (Joint Special Issue on Recent Progress in Optoelectronics and Communications)
Category: Communication Networks
Keyword: 
optical communicationoptical pathInternet protocol
 Summary | Full Text:PDF(370.9KB)

Flexible OADM Architecture and Its Impact on WDM Ring Evolution for Robust and Large-Scale Optical Transport Networks
Naohide NAGATSU Satoru OKAMOTO Masafumi KOGA Ken-ichi SATO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 1999/08/25
Vol. E82-C  No. 8  pp. 1371-1380
Type of Manuscript:  Special Section PAPER (Joint Special Issue on Recent Progress in Optoelectronics and Communications)
Category: Communication Networks
Keyword: 
optical transport networkring networkglobal area networkoptical add/drop multiplexer (OADM)path protection
 Summary | Full Text:PDF(1.3MB)

Robust IP Backbone Network Utilizing WDM Optical Paths
Atsushi WATANABE Satoru OKAMOTO Ken-ichi SATO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 1999/08/25
Vol. E82-C  No. 8  pp. 1381-1386
Type of Manuscript:  Special Section PAPER (Joint Special Issue on Recent Progress in Optoelectronics and Communications)
Category: Communication Networks
Keyword: 
optical communicationoptical pathInternet protocol
 Summary | Full Text:PDF(400.2KB)

Flexible OADM Architecture and Its Impact on WDM Ring Evolution for Robust and Large-Scale Optical Transport Networks
Naohide NAGATSU Satoru OKAMOTO Masafumi KOGA Ken-ichi SATO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1999/08/25
Vol. E82-B  No. 8  pp. 1105-1114
Type of Manuscript:  Special Section PAPER (Joint Special Issue on Recent Progress in Optoelectronics and Communications)
Category: Communication Networks
Keyword: 
optical transport networkring networkglobal area networkoptical add/drop multiplexer (OADM)path protection
 Summary | Full Text:PDF(639.5KB)

Design and Performance of Delivery and Coupling Switch Board for Large Scale Optical Path Cross-Connect System
Atsushi WATANABE Satoru OKAMOTO Masafumi KOGA Ken-ichi SATO Masayuki OKUNO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1998/06/25
Vol. E81-B  No. 6  pp. 1203-1212
Type of Manuscript:  PAPER
Category: Optical Communication
Keyword: 
optical communicationoptical path networkcross-connect systemoptical switch
 Summary | Full Text:PDF(988.1KB)

ATM Network Resource Management Techniques for CBR Virtual Paths/Channels
Youichi SATO Naoaki YAMANAKA Ken-ichi SATO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1996/05/25
Vol. E79-B  No. 5  pp. 684-692
Type of Manuscript:  PAPER
Category: Communication Networks and Services
Keyword: 
ATMCBRM/D/1quality of servicecell delay variation
 Summary | Full Text:PDF(780KB)

Optical Path Accommodation Design Enabling Cross-Connect System Scale Evaluation
Naohide NAGATSU Ken-ichi SATO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1995/09/25
Vol. E78-B  No. 9  pp. 1339-1343
Type of Manuscript:  LETTER
Category: Optical Communication
Keyword: 
optical path networkcross-connect system scalewavelength assignmentheuristic method
 Summary | Full Text:PDF(324.7KB)

Analyses of Virtual Path Bandwidth Control Effects in ATM Networks
Hisaya HADAMA Ken-ichi SATO Ikuo TOKIZAWA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1995/06/25
Vol. E78-B  No. 6  pp. 907-915
Type of Manuscript:  PAPER
Category: Communication Systems and Transmission Equipment
Keyword: 
communication systems and transmission equipmentB-ISDNATM transport networkvirtual pathcapacity control
 Summary | Full Text:PDF(771.3KB)

Optical Path Cross-Connect Node Architecture Offering High Modularity for Virtual Wavelength Paths
Atsushi WATANABE Satoru OKAMOTO Ken-ichi SATO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1995/05/25
Vol. E78-B  No. 5  pp. 686-693
Type of Manuscript:  Special Section PAPER (Special Issue on Optical Signal Processing and Its Applications to Telecommunications)
Category: 
Keyword: 
photonic transport networkoptical pathwavelength division multiplexingcross-connectmodularity
 Summary | Full Text:PDF(678.4KB)

Optical Path Accommodation Designs Applicable to Large Scale Networks
Naohide NAGATSU Yoshiyuki HAMAZUMI Ken-ichi SATO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1995/04/25
Vol. E78-B  No. 4  pp. 597-607
Type of Manuscript:  PAPER
Category: Optical Communication
Keyword: 
optical pathwavelength division multiplexingnumber of wavelengthspath accommodation designheuristic procedure
 Summary | Full Text:PDF(1008.7KB)

Jitter Tolerant Usage Parameter Control Method for ATM-based B-ISDN
Naoaki YAMANAKA Toyofumi TAKENAKA Youichi SATO Ken-ichi SATO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1995/04/25
Vol. E78-B  No. 4  pp. 485-493
Type of Manuscript:  Special Section PAPER (Special Issue on Traffic and Quality Control for Communication Networks)
Category: 
Keyword: 
ATMATM traffic controlUPCBandwidth allocationB-ISDN
 Summary | Full Text:PDF(691.6KB)

A New Optical Path Cross-Connect System Architecture Utilizing Delivery and Coupling Matrix Switch
Satoru OKAMOTO Atsushi WATANABE Ken-ichi SATO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1994/10/25
Vol. E77-B  No. 10  pp. 1272-1274
Type of Manuscript:  LETTER
Category: Optical Communication
Keyword: 
optical communicationoptical path networkcross-connect systemphotonic switching
 Summary | Full Text:PDF(172.8KB)

Optical Path Cross-Connect Node Architecture with High Modularity for Photonic Transport Networks
Atsushi WATANABE Satoru OKAMOTO Ken-ichi SATO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1994/10/25
Vol. E77-B  No. 10  pp. 1220-1229
Type of Manuscript:  PAPER
Category: Optical Communication
Keyword: 
photonic transport networkoptical pathwavelength division multiplexingcross-connectmodularity
 Summary | Full Text:PDF(922.3KB)

Fast VP-Bandwidth Management with Distributed Control in ATM Networks
Ryutaro KAWAMURA Hisaya HADAMA Ken-ichi SATO Ikuo TOKIZAWA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1994/01/25
Vol. E77-B  No. 1  pp. 5-14
Type of Manuscript:  PAPER
Category: Communication Networks and Service
Keyword: 
communication networks and servicesATMvirtual pathbandwidth controldistributed control
 Summary | Full Text:PDF(903.6KB)

Usage Parameter Control and Bandwidth Allocation Methods Considering Cell Delay Variation in ATM Networks
Naoaki YAMANAKA Youichi SATO Ken-ichi SATO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1993/03/25
Vol. E76-B  No. 3  pp. 270-279
Type of Manuscript:  Special Section PAPER (Special Issue on Broadband ISDN --Application, Networking and Management--)
Category: 
Keyword: 
ATMB-ISDNUPCpolicingtraffic management
 Summary | Full Text:PDF(717.5KB)

Precise UPC Scheme Suitable for ATM Networks Characterized by Widely Ranging Traffic Parameter Values
Naoaki YAMANAKA Youichi SATO Ken-ichi SATO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1992/12/25
Vol. E75-B  No. 12  pp. 1367-1372
Type of Manuscript:  LETTER
Category: Communication Networks and Service
Keyword: 
ATMB-ISDNUPCpolicingtraffic management
 Summary | Full Text:PDF(375KB)

Traffic Shaping for VBR Traffic in ATM Networks
Naoaki YAMANAKA Youichi SATO Ken-ichi SATO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1992/10/25
Vol. E75-B  No. 10  pp. 1105-1108
Type of Manuscript:  LETTER
Category: Communication Networks and Service
Keyword: 
ATMB-ISDNtrafficcell spacebandwidth allocation
 Summary | Full Text:PDF(266.4KB)

Evaluation of Statistical Cell Multiplexing Effects and Path Capacity Design in ATM Networks
Youichi SATO Ken-ichi SATO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1992/07/25
Vol. E75-B  No. 7  pp. 642-648
Type of Manuscript:  PAPER
Category: Communication Networks and Service
Keyword: 
ATMB-ISDNtaffic control
 Summary | Full Text:PDF(621.4KB)

Performance Limitation of Leaky Bucket Algorithm for Usage Parameter Control and Bandwidth Allocation Methods
Naoaki YAMANAKA Youichi SATO Ken-ichi SATO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1992/02/25
Vol. E75-B  No. 2  pp. 82-86
Type of Manuscript:  LETTER
Category: Communication Networks and Service
Keyword: 
ATMB-ISDNUPCpolicingleaky bucket
 Summary | Full Text:PDF(273.3KB)

Traffic Control Technologies in ATM Networks
Hiroshi SAITO Konosuke KAWASHIMA Ken-ichi SATO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1991/04/25
Vol. E74-B  No. 4  pp. 761-771
Type of Manuscript:  INVITED PAPER (Special Issue on ATM)
Category: 
Keyword: 
 Summary | Full Text:PDF(944.1KB)

Linearity in Fiber-Optic Analog Transmission System Using Laser Diodes
Ken-ichi SATO Koichi ASATANI 
Publication:   IEICE TRANSACTIONS (1976-1990)
Publication Date: 1981/10/25
Vol. E64-E  No. 10  pp. 646-652
Type of Manuscript:  PAPER
Category: Transmission Systems
Keyword: 
 Summary | Full Text:PDF(461.5KB)