- 1981-1984 : Doctor Course of Graduate School of Engineering Science, Osaka University (Ph.D, March 1984)
- 1979-1981 : Master Course of Graduate School of Engineering Science, Osaka University
- 1975-1979 : Dept. of Information and Computer Sciences, Faculty of Engineering Science, Osaka University
- 2002-Date : Professor of Graduate School of Information Science and Technology, Osaka University
- 1999-2002 : Professor of Graduate School of Engineering Science, Osaka University
- 1991-1999 : Associate Professor of Faculty of Engineering Science, Osaka University
- 1989-1991 : Assistant Professor of Faculty of Engineering Science, Osaka University
- 1984-1989 : Research Associate, Osaka University
- 2008-2012 : Board Member of Assessment and Evaluation Board, Osaka University (Director of Data Management and Analysis Office)
- 2012-2014 : Director of Office for Evaluation and Information Analysis
Ministry of Education, Culture, Sports, Science and Technology
- 2013-2016 : Senior Program Officer, Research Center for Science Systems, Japan Society for the Promotion of Science (JSPS)
- 2007-2013 : Principal Investigator (PI) in the research area of Advanced Integrated Sensing Technologies, Core Research for Evolutional Science and Technology (CREST), Japan Science and Technology Agency (JST)
- April, 2018 : The 2018 Commendation for Science and Technology by the Minister of Education, Culture, Sports, Science and Technology (Prizes for Science and Technology, Research Category)
- Science Council of Japan (SCJ), Council Member (2014-Date)
- IEEE Senior Member
- Fellow of Information Processing Society of Japan
- Members of ACM and IEICE of Japan
- IEEE Intelligent Transportation Systems (ITS) Socity, Technical Committee on Mobile Communication Networks, Co-chair.
- IEEE Transactions on Mobile Computing (TMC), Associate Editor (2016-Date)
- Member of IFIP TC6/WG6.1 since 2000
- Vice President of Information Processing Society of Japan (from June 2016 to May 2018)
- Auditor of Information Processing Society of Japan (from May 2009 to May 2011)
- Member of the Board of Directors of Information Processing Society of Japan (from May 2001 to May 2003)
- Chair of the special interest group for multimedia communication and distributed systems of Information Processing Society of Japan (from 2002 to 2006)
TPC Members of International Conferences
- He served on Program (General) Chairs of IWPTS'94, FORTE/PSTV'97, ICNP2002, OPODIS'04, FMUIT2006, ICNP2006, ATVA2007, FORTE2008, TestCom2008, VehiMobi2010, ICNP2010, P2P 2011, SSS 2013 and ICDCS2016.
- He also served on Vice-Chairs of ICDCS'96, '98 and 2004, Workshop Chair of ICDCS2017 and TPC Members of several international conferences such as FORTE, TestCom, ICDCS, ICNP, INFOCOM, ICCPS, ICPADS, ICODP, ICOIN, DAIS, Middleware, ISADS, SEFM, ATVA, OPODIS, SIGCOMM Asia, CoNext, PWN, DCOSS, ITSC, VNC and so on.
- He is Steering Committee Members of IEEE ICNP, IEEE P2P and ATVA conferences.