Hajime NAKAMURA


Real-Time Vital Monitoring for Persons during Exercises — Solutions and Challenges —
Shinsuke HARA Hiroyuki OKUHATA Takashi KAWABATA Hajime NAKAMURA Hiroyuki YOMO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2016/03/01
Vol. E99-B  No. 3  pp. 556-564
Type of Manuscript:  INVITED PAPER (Special Section on Information and Communication Technology for Healthcare and Medical Applications in Conjunction with Main Topics of ISMICT2015)
Category: 
Keyword: 
vital sensingwireless transmissionheart ratebody temperatureenergy expenditure
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Simplification of Service Functions Resulting from Growth in Scale of Networks
Nagao OGINO Hideyuki KOTO Hajime NAKAMURA Shigehiro ANO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2013/09/01
Vol. E96-B  No. 9  pp. 2224-2234
Type of Manuscript:  PAPER
Category: Network
Keyword: 
network evolutionsimplification of service functionsgrowth in scale of networkpriority controlload balancing
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Route Computation Method for Secure Delivery of Secret Shared Content
Nagao OGINO Takuya OMI Hajime NAKAMURA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2012/11/01
Vol. E95-B  No. 11  pp. 3456-3463
Type of Manuscript:  PAPER
Category: Network
Keyword: 
route computation methodsecure content deliverysecret sharing schemeshortest route algorithmlink distance adjustment
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An Adaptive Method to Acquire QoS Class Allocation Policy Based on Reinforcement Learning
Nagao OGINO Hajime NAKAMURA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2012/09/01
Vol. E95-B  No. 9  pp. 2828-2837
Type of Manuscript:  PAPER
Category: Network
Keyword: 
multi-domain path-based networkend-to-end QoS guaranteeadaptive QoS class allocationacquisition of allocation policyreinforcement learning
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All-Optical Monitoring Path Computation Using Lower Bounds of Required Number of Paths
Nagao OGINO Hajime NAKAMURA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2012/08/01
Vol. E95-B  No. 8  pp. 2576-2585
Type of Manuscript:  PAPER
Category: Network
Keyword: 
all-optical networkmonitoring pathsingle-link failurepath computationlower bounds of required number of paths
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Telecommunications Network Planning Method Based on Probabilistic Risk Assessment
Nagao OGINO Hajime NAKAMURA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2011/12/01
Vol. E94-B  No. 12  pp. 3459-3470
Type of Manuscript:  PAPER
Category: Network
Keyword: 
network planningrobustness against extraordinary trafficprobabilistic risk assessmentcapacity dimensioningtraffic rerouting
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A Web Script-Based Field Evaluation Method to Assess Subjective Quality of Mobile Services
Satoshi UEMURA Sumaru NIIDA Hajime NAKAMURA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2011/03/01
Vol. E94-B  No. 3  pp. 639-648
Type of Manuscript:  Special Section PAPER (Special Section on Information and Communication Technologies for Next-generation Mobile Multimedia Life)
Category: 
Keyword: 
user satisfactionQoEsubjective assessmentwaiting time
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An Inter-Domain Path Computation Scheme Adaptive to Traffic Load in Domains
Nagao OGINO Hajime NAKAMURA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2010/04/01
Vol. E93-B  No. 4  pp. 907-915
Type of Manuscript:  PAPER
Category: Network
Keyword: 
inter-domain path computationadaptation to traffic loadpath establishment delayoptimality of path computationcomputer simulation
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A Traffic Forecasting Method with Function to Control Residual Error Distribution for IP Access Networks
Takeshi KITAHARA Hiroki FURUYA Hajime NAKAMURA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2010/01/01
Vol. E93-B  No. 1  pp. 47-55
Type of Manuscript:  PAPER
Category: Internet
Keyword: 
traffic forecastingaccess networkcapacity planningneural network
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Adaptive Transmission Control Method for Communication-Broadcasting Integrated Services
Hideyuki KOTO Hiroki FURUYA Hajime NAKAMURA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2009/03/01
Vol. E92-B  No. 3  pp. 878-888
Type of Manuscript:  PAPER
Category: Network
Keyword: 
broadcasting systeminteractive TVtraffic controlTCP
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Adaptive QoS Class Allocation Schemes in Multi-Domain Path-Based Networks
Nagao OGINO Hajime NAKAMURA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2009/03/01
Vol. E92-B  No. 3  pp. 898-908
Type of Manuscript:  PAPER
Category: Network
Keyword: 
multi-domain path-based networkend-to-end QoS guaranteeadaptive QoS class allocationestimation of policyMarkov decision theory
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An Efficient Multicast Forwarding Method for Optical Bursts under Restricted Number of Burst Replicas
Nagao OGINO Hajime NAKAMURA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2009/03/01
Vol. E92-B  No. 3  pp. 828-837
Type of Manuscript:  PAPER
Category: Fiber-Optic Transmission for Communications
Keyword: 
optical burst switching networkmulticast forwarding methodrestricted number of replicationsoutput port scorecomputer simulation
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Objective Speech Quality Assessment Based on Payload Discrimination of Lost Packets for Cellular Phones in NGN Environment
Satoshi UEMURA Norihiro FUKUMOTO Hideaki YAMADA Hajime NAKAMURA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2008/11/01
Vol. E91-B  No. 11  pp. 3667-3676
Type of Manuscript:  PAPER
Category: Network Management/Operation
Keyword: 
voice qualityQoEQoSNGNVoIPRTCP XR
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Modeling of Seamless Interworking Environments for Heterogeneous Mobile Systems
Masaki FUKUSHIMA Hajime NAKAMURA Shinichi NOMOTO Yu WATANABE 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2006/10/01
Vol. E89-B  No. 10  pp. 2885-2896
Type of Manuscript:  PAPER
Category: Terrestrial Radio Communications
Keyword: 
heterogeneous system interworkingsystems beyond IMT-2000mobilityqueueing network model
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Design Methods for Utility Max-Min Fair Share Networks
Hiroyuki YOKOYAMA Hajime NAKAMURA Shinichi NOMOTO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2004/10/01
Vol. E87-B  No. 10  pp. 2922-2930
Type of Manuscript:  PAPER
Category: Network
Keyword: 
utility functionsmax-min fair sharebandwidth allocationnetwork design
 Summary | Full Text:PDF

Reflection Routing: A Simple Approach for Contention Resolution in All-Optical Packet Switched Networks
Hiroyuki YOKOYAMA Hajime NAKAMURA Shinichi NOMOTO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2004/06/01
Vol. E87-B  No. 6  pp. 1561-1568
Type of Manuscript:  PAPER
Category: Network
Keyword: 
optical packet switchingroutingreflectiontopologypacket loss ratio
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Prototype System of SLAMNet: Implementation and Performance Analysis of Signaling-Free Wavelength Path Switching Network
Hiroyuki YOKOYAMA Hajime NAKAMURA Shinichi NOMOTO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2004/04/01
Vol. E87-B  No. 4  pp. 932-939
Type of Manuscript:  PAPER
Category: Network
Keyword: 
optical networksDWDMbest effortwavelength path assignmentautonomous controlimplementation
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Expectations on Software Defined Radio (SDR) in Standardization Fora on Future Mobile Communication Systems
Fumio WATANABE Masayoshi OHASHI Hajime NAKAMURA Hisato IWAI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2003/12/01
Vol. E86-B  No. 12  pp. 3366-3373
Type of Manuscript:  INVITED PAPER (Special Issue on Software Defined Radio Technology and Its Applications)
Category: 
Keyword: 
software defined radio (SDR)mobile communication systemsIMT-2000systems beyond IMT-2000
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Local Poisson Property of Aggregated IP Traffic
Hiroki FURUYA Hajime NAKAMURA Shinichi NOMOTO Tetsuya TAKINE 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2003/08/01
Vol. E86-B  No. 8  pp. 2368-2376
Type of Manuscript:  PAPER
Category: Fundamental Theories
Keyword: 
IP trafficlocal Poisson propertytime scalesqueueing systemfinite bufferpacket loss probabilitynetwork design
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Modeling of Aggregated TCP/IP Traffic on a Bottleneck Link Based on Scaling Behavior
Hiroki FURUYA Masaki FUKUSHIMA Hajime NAKAMURA Shinichi NOMOTO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2002/09/01
Vol. E85-B  No. 9  pp. 1756-1765
Type of Manuscript:  PAPER
Category: Internet
Keyword: 
traffic modelscaling behaviorself-similarityTCP/IPperformance estimation
 Summary | Full Text:PDF

Dynamic Bend Mode in Pi-Cells
Hajime NAKAMURA Koichi MIWA Michikazu NOGUCHI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2000/10/25
Vol. E83-C  No. 10  pp. 1558-1564
Type of Manuscript:  Special Section PAPER (Special Issue on Electronic Displays)
Category: 
Keyword: 
pi-cellbendtwistsplaydynamic bend mode
 Summary | Full Text:PDF

Tandem Queue Approximation of Non-preemptive Priority Queues for Capacity Dimensioning and Call Admission Control in an ATM Switch
Hiroyuki YOKOYAMA Hajime NAKAMURA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1998/11/25
Vol. E81-B  No. 11  pp. 2072-2080
Type of Manuscript:  Special Section PAPER (Special Issue on Performance and Quality of Service (QoS) of Multimedia Networks)
Category: ATM Networks
Keyword: 
ATMpriority controlQoSCACbandwidth controleffective bandwidth
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Optimization of Facility Planning and Circuit Routing for Survivable Transport NetworksAn Approach Based on Genetic Algorithm and Incremental Assignment
Hajime NAKAMURA Toshikane ODA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1997/02/25
Vol. E80-B  No. 2  pp. 240-251
Type of Manuscript:  Special Section PAPER (Special Issue on Telecommunications Network Planning and Design)
Category: Network planning techniques
Keyword: 
transport networkfacility planningcircuit routingrestoration planningGAIA method
 Summary | Full Text:PDF

Optimal Bandwidth Reservation for Circuit Groups Handling Asymmetric Multi-Connection Calls
Hajime NAKAMURA Toshikane ODA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1996/06/25
Vol. E79-B  No. 6  pp. 816-825
Type of Manuscript:  PAPER
Category: Communication Networks and Services
Keyword: 
B-ISDNasymmetric connection callmulti-connection callmultirate networkbandwidth reservation
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Call Blocking Probabilities of Asymmetric Multi-Connection Circuit Groups with Bandwidth Negotiation and Reservation
Hajime NAKAMURA Toshikane ODA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1995/04/25
Vol. E78-B  No. 4  pp. 551-562
Type of Manuscript:  Special Section PAPER (Special Issue on Traffic and Quality Control for Communication Networks)
Category: 
Keyword: 
B-ISDNcircuit groupasymmetric connectionmulti-connection callmultirate callbandwidth negotiationbandwidth reservationreduced load approximation
 Summary | Full Text:PDF