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The current research topics are listed in the below. Selected papers are also included for each research topic.


Integrated Multimedia QoS Architecture

An approach for heterogeneous video multicast using active networking

  • Hector Akamine, Naoki Wakamiya and Hideo Miyahara, "Heterogeneous Video Multicast in an Active Network,"  submitted to IEICE Transactions on Communications, January 2001. [pdf]

  • Hector Akamine, "Heterogeneous video multicast using QoS filters in active networks," Master's thesis, Graduate School of Engineering Science, Osaka University, February 2001. [pdf]

Integrated resource allocation scheme for real-time video transfer

  • Taketo Yamashita, Naoki Wakamiya, Masayuki Murata and Hideo Miyahara, "Implementation and evaluation of integrated resource allocation scheme for real-time video transfer to maximize users' utility," in Proceedings of APCC 2000, (Seoul), pp. 390-394, October-November 2000. [pdf]

Video transfer with TCP-friendly rate control protocol

  • Naoki Wakamiya, Masayuki Murata and Hideo Miyahara, "TCP-friendly video transfer," in Proceedings of SPIE International Symposium on Information Technologies 2000, (Boston), November 2000. [pdf]

  • Masaki Miyabayashi, Naoki Wakamiya, Masayuki Murata and Hideo Miyahara, "MPEG-TFRCP: Video transfer with TCP-friendly rate control protocol," to be presented at IEEE International Conference on Communications 2001 (ICC 2001), June 2001. [pdf]

Proxy caching mechanisms with video quality adjustment

  • Masahiro Sasabe, Naoki Wakamiya, Masayuki Murata, and Hideo Miyahara, "Proxy Caching Mechanisms with Video Quality Adjustment, submitted to SPIE ITCom 2001, February 2001.

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Feedback Mechanism in Packet Switching Networks

A control theoretical analysis of a window-based flow control mechanism in TCP/IP networks

  • Keiichi Takagaki, Hiroyuki Ohsaki and Masayuki Murata, "Analysis of a window-based flow control mechanism based on TCP Vegas in heterogeneous network environment," to be presented at IEEE ICC 2001, June 2001. [pdf]

  • Hiroyuki Ohsaki, Keiichi Takagaki, and Masayuki Murata, "A control theoretical analysis of a window-based flow control mechanism for TCP connections with different propagation delays," submitted to SPIE's International Symposium on the Convergence of Information Technologies and Communications, February 2000.

Steady state analysis of the RED gateway

  • Hiroyuki Ohsaki, Yuichiro Mera, Masayuki Murata, and Hideo Miyahara, "Steady state analysis of the RED gateway: stability, transient behavior, and parameter setting," submitted to ACM SIGMETRICS 2001/PERFORMANCE 2001, November 2000. [pdf]

Application of control theory to a window-based flow control mechanism with ECN routers

  • Hiroyuki Ohsaki, Masayuki Murata, and Hideo Miyahara, "Application of control theory to a window-based flow control mechanism with ECN routers," submitted to Performance Evaluation, August 2000. [pdf]

Modeling end-to-end packet delay dynamics of the Internet

  • Hiroyuki Ohsaki, Masayuki Murata, and Hideo Miyahara, "Modeling end-to-end packet delay dynamics of the Internet using system identification," submitted to International Teletraffic Congress 17, January 2001. [pdf]

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High-Speed Transport Architecture

Fairness improvements of TCP congestion control mechanisms

  • Go Hasegawa, Masayuki Murata and Hideo Miyahara, "Fairness and stability of congestion control mechanisms of TCP," Telecommunication Systems Journal, pp. 167-184, November 2000. [pdf]

  • Go Hasegawa and Masayuki Murata, "Survey on fairness issues in TCP congestion control mechanisms," to appear in IEICE Transactions on Communications, January 2001. [pdf]

Packet scheduling for achieving fairness among TCP connections

  • Kenji Kurata, Go Hasegawa, Masayuki Murata, "Fairness comparisons between TCP Reno and TCP Vegas for future deployment of TCP Vegas," in Proceedings of INET 2000, July 2000. [pdf]

  • Kenji Kurata, "A study on high speed packet scheduling method for achieving fairness among TCP connections," Master's thesis, Graduate School of Engineering Science, Osaka-University, February 2001. [pdf]

Scalable socket buffer tuning for high-performance Web servers

  • Go Hasegawa, Tatsuhiko Terai and Masayuki Murata, "Scalable socket buffer tuning for high-performance Web servers," submitted to ACM SIGCOMM 2001, January 2001. [pdf]

  • Tatsuhiko Terai, Takuya Okamoto, Go Hasegawa and Masayuki Murata, "Implementation of dynamic socket buffer assignment mechanism for high-performance Web servers," submitted to SPIE ITCom 2001, February 2001. [pdf]

Study on thousands of TCP flows

  • Go Hasegawa and Masayuki Murata, "The dynamic threshold control algorithm of RED for thousands of TCP flows," submitted to SPIE ITCom 2001, February 2001. [pdf]

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High-Speed Packet Switching Architecture

Analysis of Internet traffic and its application to designs of high-speed routers

  • Shingo Ata, Masayuki Murata, and Hideo Miyahara, "Analysis of network traffic and its application to design of high-speed routers," IEICE Transactions on Information and Systems, Vol.  E83-D, pp. 988-995, May 2000. [pdf]

Efficient cache structure of IP routers

  • Shingo Ata, Masayuki Murata, and Hideo Miyahara, "Efficient cache structures of IP routers to provide policy-based services," to be presented at IEEE ICC 2001, June 2001. [pdf]

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Internet Traffic Characterization and Its Application

Internet capacity dimensioning based on traffic measurement and its statistical analysis

  • Kazumine Matoba, "A study on the Internet capacity dimensioning based on traffic measurement and its statistical analysis," Master's thesis, Graduate School of Engineering Science, Osaka University, February 2001. [pdf]

  • Kazumine Matoba, Shingo Ata, and Masayuki Murata, "Improving accuracy of bandwidth estimation for Internet links by statistical methods," to appear in IEICE Transactions on Communications, June 2001. [pdf]

Statistical analysis of packet delays in the Internet

  • Kouhei Fujimoto, Shingo Ata, and Masayuki Murata, "Statistical analysis of packet delays in the Internet and its application to playout control for streaming applications," to appear in IEICE Transactions on Communications, June 2001. [pdf]

  • Kouhei Fujimoto, Shingo Ata, and Masayuki Murata, "Playout control for streaming applications by statistical delay analysis," to be presented at IEEE International Conference on Communications 2001 (ICC 2001), June 2001. [pdf]

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Photonic Network Architecture

IP over a-thousand-wavelength division multiplexing:

  • Masayuki Murata, Ken-ichi Kitayama and Hideo Miyahara, "IP over a-thousand-wavelength division multiplexing: Is it useful and possible for resolving the network bottlenecks?," submitted to Optical Networks Magazine, November 2000. [pdf]

Design method of logical topology for IP over WDM networks 

  • Junichi Katou, Shin'ichi Arakawa, and Masayuki Murata, "A design method of logical topology for IP over WDM networks with stable routing," to be presented at The Fifth Working Conference on Optical Network Design and Modeling, February 2001. [pdf]

  • Junichi Katou, Shin'ichi Arakawa, and Masayuki Murata, "A Design Method of Logical Topology with Stable Packet Routing in {IP} over WDM Network,", submitted to IEEE Journal on Selected Areas in Communications, February 2001. [pdf]

Design methods of multi-layer survivability in IP over WDM networks

  • Shin'ichi Arakawa, Masayuki Murata, Hideo Miyahara, "Design methods of multi-layer survivability in IP over WDM networks," in Proceedings of OptiComm 2000, pp. 279-290, October 2000. [pdf]

  • Shin'ichi Arakawa, Masayuki Murata, Hideo Miyahara, "Functional partitioning for multi-layer survivability in IP over WDM networks," IEICE Transactions on Communications, pp. 2224-2233, October 2000. [pdf]

Optical burst switching

  • Ikutaro Ogushi, Shin'ichi Arakawa, Masayuki Murata and Ken-ichi Kitayama, "Parallel reservation protocols for achieving fairness in optical burst switching," submitted to IEEE Workshop on High Performance Switching and Routing, November 2000. [pdf]

Traffic accommodation for optical compression TDM/WDM rings

  • Kazuhiro Gokyu, Ken-ichi Baba and Masayuki Murata, "Scheduling algorithm for uniform/nonuniform traffic in unidirectional optical compression TDM/WDM rings with tuning latency," submitted to ACM Transactions on Optical Networks and Systems (TONS), January 2001. [pdf]

  • Kazuhiro Gokyu, "Traffic accommodation methods for optical compression TDM/WDM ring networks," Master's thesis, Graduate School of Engineering Science, Osaka-University, February 2001. [pdf]

Photonic label switch architecture

  • Masayuki Murata and Ken-ichi Kitayama, "A perspective on photonic multi-protocol label switching," submitted to IEEE Network Magazine, November 2000. [pdf]

  • Masayuki Murata and Ken-ichi Kitayama, "Photonic Label Switch Supporting Asynchronous and Variable-Length," submitted to IEEE Journal on Selected Areas in Communications, February 2001. [pdf]

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Integrated Wired/Wireless Communication Architecture

TCP over wireless cellular networks

  • Masahiro Miyoshi, Masashi Sugano and Masayuki Murata, "Performance evaluation of TCP throughput on wireless cellular networks," to be presented at IEEE VTC 2001 Spring, May 2001. [pdf]

Ad ho network architecture

  • Masashi Sugano, Tsutomu Araki, Masayuki Murata, Takaaki Hatauchi and Yohei Hosooka, "Performance evaluation of a wireless ad hoc network: Flexible Radio Network (FRN)," in Proceedings of 2000 IEEE International Conference on Personal Wireless Communications, (Hyderabad), pp. 350-354, December 2000. [pdf]

Soft handoff in CDMA mobile cellular networks

  • Atsushi Nagate, Masashi Sugano, Masayuki Murata and Hideo Miyahara, "An integrated approach for performance modeling and evaluation of soft handoff in CDMA mobile cellular systems," in Proceedings of VTC Fall 2000, (Boston), September 2000. [pdf]

  • Atsushi Nagate, Masashi Sugano, Masayuki Murata and Hideo Miyahara, "The effect of three-way soft handoff for integrated evaluation in CDMA mobile cellular systems," in Proceedings of APCC 2000, (Seoul), pp. 617-621, October-November 2000. [pdf]

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If you have any questions, please drop a note to murata@cmc.osaka-u.ac.jp (Masayuki Murata).
Copyright (C) 2001 Masayuki Murata, Graduate School of Information Science and Technology, Osaka University
Last Update : 2004/12/30