Research Interests

Distributed and parallel processing

Mobile  cellular communication and mobile ad hoc networks

Wavelength routing and virtual topology configuration in optical networks

Java-based mobile agents

Selected Publications

Professional Activities

Editors and Steering Committees

• Editoral Board Member (2007~ ), Int. J. Peer-to-Peer Network Applications, Springer.
• Editoral Board Member (2006~2010 ), Information Processing Society of Japan.
• Steering Committee Member (2002~2006), Special Interest Groups of Telecommunication Management of IEICE.
• Guest Editor, Special Issue on Network Operation and Resource Management of IEICE Transactions on Communications, July, 2005.
• Guest Editor, Special Issue on Cluster Computing in the Internet of Journal of Computer Software and Communications, Kluwer Academic Publishers, 2002.

Conference Committees

• Program Committee Co-chair, IEEE Int. Symp. Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks (WiOpt2013) , Tsukuba, Japan, May 13-17, 2013.
• Program Committee, IEEE Int. Conf. Computer Communications (INFOCOM2013) , Turin, Italy, April 14-19, 2013.
• Program Committee, IEEE Int. Conf. Computer Communications (INFOCOM2012) , Orlando, Florida, March 25-30, 2012.
• Program Committee, Wireless Networking Symp., IEEE Int. Conf. Communications (ICC2012) , Ottawa, Canada, June 10-15, 2012.
• Program Committee, Ad-hoc and Sensor Networking Symp., IEEE Int. Conf. Communications (ICC2012) , Ottawa, Canada, June 10-15, 2012.
• Program Committee, IEEE Int. Conf. Computer Communications (INFOCOM2011) , Shanghai, China, April 10-15, 2011.
• Program Committee, Wireless Networking Symp., IEEE Int. Conf. Communications (ICC2011) , Kyoto, Japan, June 5-9, 2011.
• Program Committee, IEEE Global Communications Conf. (GLOBECOM2010) , Miami, Florida, December 6-10, 2010.
• Program Committee, Wireless and Mobile Networking Symposium, IEEE Int. Conf. Commun. (ICC2010) , Cape Town, South Africa, May 23-27, 2010.
• Program Committee, 5th Int. Conf. Frontier of Computer Science and Technology (FCST2010), Changchun, China, August 18-22, 2010.
• Program Committee, IEEE Int. Conf. Commun. (ICC2009) , Dresden, Germany, June 14-18, 2009.
• Program Committee, IEEE Global Communications Conf. (GLOBECOM2008) , New Orleans, LA, November 30-December 4, 2008.
• Program Committee, Int. Wireless Communications and Mobile Computing Conf. (IWCMC2008) , Crete Island, Greece, August 6-8, 2008.
• Program Committee, International Conf. on Mobile Ad-hoc and Sensor Networks (MSN'08) , Wuhan, China, December 10-12, 2008.
• Program Committee, IFIP Networking 2008 , Singapore, May 5-9, 2008.
• Local Arrangement Chair and Program Committee, Asia-Pacific Service Computing Conference (IEEE APSCC2007), Dec. 11-14, 2007, Tsukuba, Japan.
• Program Committee, 16th Int. Conf. Computer Communications and Networks (ICCCN2007) , Honolulu, Hawaii, August 13-16, 2007.
• Program Committee, IFIP Networking 2007, Atlanta, Georgia, May 14-18, 2007.
• Program Committee, 15th Int. Conf. Computer Communications and Networks (ICCCN2006) , Arlington, Virginia, October 9-11, 2006.
• Program Committee, 4th Int. Conf. Cooperative Internet Computing (CIC2006), Hong Kong, China, October 25-27, 2006.
• Program Committee, Asia-Pacific Network Operations and Management Symposium (APNOMS 2006), Busan, Korea, September 27-29, 2006.
• Program Committee, Networking 2006, Coimbra, Portugal, May 15-19, 2006.
• Program Committee, Int. Workshop on Sensor Networks (IWSN'06), to be held in conjunction with APWeb 2006, Harbin, China, January 16-18, 2006.
• Program Committee, IEEE Vehicular Technology Conference 2006 - Spring (VTC 2006), Melbourne, Australia, May 8-10, 2006.
• Program Committee, 2005 IFIP Int. Conf. on Embedded and Ubiquitous Computing (EUC'2005), Okinawa, Japan, Sep. 27-30, 2005.
• Session Chair and Program Committee, The Asia-Pacific Network Operations and Management Symposium (APNOMS 2005), Nagasaki, Japan, Dec. 6-9, 2005.
• Program Committee, International Conf. on Mobile Ad-hoc and Sensor Networks (MSN'05), Wuhan, China, Dec. 13-15, 2005.
• Program Committee, Wireless Ad Hoc/Sensor Networks and Network Security Track of International Conference on Information Technology (ITCC 2005), Las Vegas, Nevada, USA, April 11-13, 2005.
• Program Committee, 2005 IFIP Networking Conference (Networking 2005), Waterloo, Canada, May 2-6, 2005.
• Program Committee, The Seventh Asia Pacific Web Conference (APWeb'05), Shanghai, China, March 29-April 1, 2005.
• Program Committee, Third International Workshop on Cooperative Internet Computing (CIC 2004) held in conjunction with ISPA'04, Hong Kong, China, December 12, 2004.
• Program Committee, Symposium of Wireless Access,   IEEE Vehicular Technology Conference (VTC-2004 Spring), Magazzini del Cotone, Italy, May 11-14, 2004.
• Program Committee, The 1st International Workshop on Mobile Peer-to-Peer Computing (MP2P 2004), In Conjunction with the 2nd IEEE International Conference on Pervasive Computing and Communications, Orlando, Florida, USA, March 14-17, 2004.
• Program Committee, Symposium of Access Protocols and Scheduling for Wireless Systems, IEEE Semiannual Vehicular Technology Conference (VTC-2003 Fall), Orlando, Florida, USA, October 4-9, 2003.
• Program Committee, Symposium of Next Generation Networks and Internet, IEEE Global Communication Conference (Globcom 2003), San Francisco, CA, USA, December 1-5, 2003.
• Program Committee, The 1st International Workshop on Mobile Distributed Computing (MDC'03), in conjunction with the 23rd International Conference on Distributed Computing Systems (ICDCS 2003), Providence, Rhode Island, USA, May 19-22, 2003.
• Program Committee, IEEE 2003 International Conference on Communications (ICC 2003), Anchorage, Alaska, USA, May 11-15, 2003.
• Program Committee,   The 4th International Workshop on Distributed Computing, Kolkata, India, December 28-31, 2002. 
• Local Arrangement Co-chair and Program Committee, IASTED International Conference on Networks, Parallel and, Distributed Processing, and Applications (NPDPA 2002), Tsukuba, Japan, October 1- 4, 2002.
• Program Committee, The 2nd International Workshop on Cooperative Internet Computing 2002 (CIC 2002), in conjuction with the 28th Int. Conf. on Very Large Data Bases (VLDB 2002), Hong Kong, August 20-23, 2002.
• Program Committee, The First International Workshop on Parallel and Distributed Computing Issues in Wireless Networks and Mobile Computing, in conjuction with the International Parallel and Distributed Processing Symposium, San Francisco, California, USA, April 23-27, 2001.

Referee for Journals

• IEEE Trans. on Communications, Computers, Reliability, Vehicular Technology, Mobile Computing, Wireless Communications, and Networking, Journal of Selected Area Communications, Journal of Lightwave Technology
• IEICE Trans. on Fundamental of Electronics, Communications and Computer Sciences and Communications, IPSJ Transactions
• Wireless Networks, J. Parallel and Distributed Computing, Computer Journal, Optical Switching and Networking, etc.