Yoshiaki Tanaka, Professor, Dr. Eng.

Transcription

1 Yoshiaki Tanaka, Professor, Dr. Eng. Department of Communications and Computer Engineering, Waseda University E mail ytanaka@waseda.jp Fax/Tel Postal Address: Okubo, Shinjuku ku, Tokyo, Japan

2 Research Area and Projects Area: Network Infrastructures and Services of Fixed and Mobile Networks Projects: Teletraffic Theory, Game Theory, Network Planning, Routing, Network Measurement, Network Management, Quality of Service, Quality of Experience, Network Security, NwGN, Ad Hoc Network, and Economics in Telecommunications

3 Biography 1974 Bachelor of Engineering, The University of Tokyo 1979 Doctor of Engineering, The University of Tokyo 1979 Assistant Professor, The University of Tokyo 1984 Associate Professor, The University of Tokyo 1996 Professor, Waseda University Guest Professor, Lund University, Sweden Visiting Researcher, The Institute for Posts and Telecommunications Policy Visiting Researcher, Bank of Japan Visiting Professor, National Institute of Informatics

4 Biography(2) Special Member, Information and Telecommunication Consultative Committee, Ministry of Internal Affairs and Communications 1992 Secretary General, International Switching Symposium Chairman, Editorial Committee, The ITU Association of Japan 1995 Vice Chairman, Credit Card Infrastructure Committee, Japan Credit Card Association 1997 Vice Chairman, Asia Pacific Network Operation and Management Symposium Councilor, IEICE Tokyo Section Chairman, IEICE Technical Committee on Network System Chairman, IEICE Technical Committee on Telecommunication Management Editor in Chief, IEICE Transactions on Communications Steering Committee Member, Asia Pacific Network Operation and Management Symposium Councilor, IEICE 2006 NTT R&D Advisory Board Member Director, Journal and Transactions, IEICE 2008 Editorial Advisory Board Member, International Journal of Network Management, John Wiley & Sons Councilor, IEICE 2011 Director, Japan Accreditation Board for Engineering Education President, Communications Society, The Institute of Electronics, Information and Communication Engineers

5 Awards 1977 IEEE Outstanding Student Award 1980 Niwa Memorial Prize 1980 IEICE Achievement Award 1994 Okawa Publication Prize 1995 TAF Telecom System Technology Award 1995 IEEE Senior Member 1996, 2001, 2004, 2006 IEICE Information Network Research Award 1996 IEEE Communications Society Testimonial 1997, 1998 IEICE Communications Society Activity Testimonial 2001 IEICE Switching System Research Award 2002 IEICE Fellow 2005 IEICE Best Paper Award 2006, 2008, 2011 IEICE Network System Research Award 2006 TAF Telecom System Technology Premium Award 2008 IEICE Communications Society Distinguished Contributions Award 2009 Commendation by Minister of Internal Affairs and Communications 2009, 2012 APNOMS Best Paper Award 2011 IEICE Testimonial 2013 IEICE Distinguished Achievement and Contributions Award 2014 CANDAR/ASON Workshop Best Paper Award

6 Awards (Students and Co Authors) 1990 Kaoru Sezaki IEICE Young Researcher s Award 1991 Ruixue Fan IEICE PAACS Friendship Award 1992 Chimoon Han IEICE PAACS Friendship Award 1994 Paul C. Huang IEICE PAACS Friendship Award 1998 Shinichi Takagi IEICE Young Researcher s Award 2001 Eiji Takahashi IEICE Young Researcher s Award 2002 Tomonori Takeda IEICE Young Researcher s Award 2002 Kazutomo Nomura IEICE Young Researcher s Award 2003 Noriyuki Yagi IEICE Young Researcher s Award 2004 Takumi Miyoshi IEICE Young Researcher s Award 2004 Marat Zhanikeev IEICE Young Researcher s Award 2004 Sugang Xu IEICE Young Researcher s Award for English Sessions 2005 Marat Zhanikeev IEICE Telecommunication Management Activity Award 2005 Kyoko Yamori IEICE Young Researcher s Award 2005 Takehiro Kajita IEICE Young Researcher s Award 2006 Shunsuke Ito IEICE Young Researcher s Award 2006 Hirokazu Go IEICE Young Researcher s Award 2006 Wayman Tan IEICE Young Researcher s Award for English Sessions 2006 Kyoko Yamori Ericsson Young Scientist Award 2007 Galy Lee IEICE Telecommunication Management English Session Encouragement Award 2007 Le The Quyen IEICE Telecommunication Management English Session Encouragement Award 2007 Wayman Tan APNOMS Student Award 2007 Le The Quyen IEICE Young Researcher s Award 2008 Marat Zhanikeev IEICE Telecommunication Management English Session Encouragement Award 2008 Wayman Tan IEICE Young Researcher s Award 2009 JunWang IEICE Information and Communication Management English Session Encouragement Award 2009 Zhenxing Lu IEICE Young Researcher s Award 2010 Ryo Yamamoto IEICE Young Researcher s Award 2011 Miarisoa Randriamananjara IEICE Information and Communication Management English Session Encouragement Award 2011 Bo Gu IEICE Young Researcher s Award 2012 Bo Yang ICACT Outstanding Paper Award 2012 Xin Wang IEICE Information and Communication Management English Session Encouragement Award 2012 Xin Wang IEICE Young Researcher s Award 2012 Bo Gu IEICE Communication Quality Conference Premium Award 2013 Filippos Balasis ICACT Outstanding Paper Award 2013 Cheng Zhang IEICE Young Researcher s Award 2013 Tatsuya Shirai IEICE English Session Award of NS Committee 2014 Xing Fan ICACT Outstanding Paper Award 2014 Filippos Balasis IEICE Young Researcher s Award 2014 Filippos Balasis IEICE English Session Award of NS Committee 2015 Taku Yamazaki IEICE Young Researcher s Award 2016 Ryota Kameda IEICE Tokyo Section Student Award 2016 Bo Gu IEICE Information and Communication Management English Session Encouragement Award 2016 Zhi Liu IEICE Young Researcher s Award

7 Locations Nishi Waseda Campus Bldg. No.61, Room 513, 515 Bldg. No. 61

8 Members Professor 1 Visiting Professor 2 Assistant Professor 1 Research Associate 1 Invited Researcher 4 Doctor Course Student 6 Master Course Student 10

9 Network Measurement Bottleneck bandwidth can be measured by the space between two returned packets.

10 Network Performance Management Delay Throughput. End to end connection ISP Data Centre ISP ISP (3G) Big ISP, Backbone ISP Data Centre End Users Most connections today are multi hop, multi ISP connections. Quality of Service (QoS) has to be measured and managed. Multi ISP QoS management technologies are important.

11 Federated Clouds Virtual Networks Cloud A Cloud B Data Centre Data Centre Data Centre (multiple) Network Network Network Providers Provider Data Centre Clouds today is a hybrid of network and machine virtualization. Data centres provide virtual machines (VMs). VMs communicate to each other over virtual networks (VNs). Federated clouds are made to satisfy globally spread customers.

12 Differentiated Services Carrier High Priority Class Streaming etc. Low Priority Class Mail, File Transfer, etc. Pricing What price is fir for each class?

13 Pricing and QoS Provisioning User Feedback Revenue Price Service provider Investments Aggregator server Quality of Service Limitations Network How to increase the revenue of service provider?

14 Congestion Relief in Wireless LANs Incoming user Associated user Access point Strong local association channel Weak local alternative channel (1) Channel switching (2) Moving Howtoencourageusersina congested cell to change association through (1) or (2)?

15 Load Balancing in Ad Hoc Network Control transmission rate for timelike load balancing Load increases Compare the load among neighbour terminals Ad hoc network is distributed, self organized network Difficult to control whole the network. How to detect and balance the traffic load? Routing based method, Transmission rate control, etc.

16 Security in Ad Hoc Network Get a reputation for the terminal Observe neighbouring terminals behaviour Mark as malicious terminal Atacker Discard, gerrymander, eavesdrop packets Ad hoc network is vulnerable to various attacks Wormhole attack, Blackhole attack, DDoS attack, etc. Autonomous attack detection method Observation based, reputation based method.

17 Multi Layer Networks Logical link IP Router IP layer Optical layer Wavelength Router Wavelength assignment of optical layer depends on IP layer.

18 Multi Rate Optical Networks High data rate lightpath Low data rate lightpath Cost/efficient placement and allocation of different types and amounts of regenerators supporting different data rates. Routing and wavelength assignment in a multi rate optical network.

19 Lecture: Teletraffic Theory Exercise on Teletraffic Theory 1. Call Characteristics and Modeling 2. Markovian Loss Models 3. Markovian Delay Models 4. Non Markovian Models 5. Alternative Routing Models Presentation on the paper concerning teletraffic theory

20 Lecture: Network Theory New theory which has not been published: Design Method of Highly Reliable Networks Using Graph Theory 1. Graph Theory and Network Theory 2. Graph Design Using Adjacency Matrix 3. Linear Design Method of Graph 4. Extended Complete Graph 5. Approximate Formulae of the Number of Disjoint Routes and Network Optimization