Research Area

Large-scale Wireless Sensor Networks

In near future, the Internet infrastructure (i.e., Internet of Things) will connect trillions of sensors and machine objects together to truly realize the vision of Ubiquitous Computing. The focus of our research is given on the solutions for ultra large-scale wireless sensor networks.

Wireless LAN Technology

While WLAN has been very successful in providing high capacity at low cost, it involves inefficiency due to the lack of sophisticated resource management. The focus of our research is given on such issues as WLAN load balancing, configuration optimization for capacity enhancement and mobile multimedia support.

Mobile Cloud Computing

Mobile Cloud Computing is the combination of cloud computing, mobile computing and wireless networks to bring rich computational resources to mobile users. Our research extends across a broad range of relevant mobile devices including wearable devices, IoT devices.

Multi-hop Wireless Networking

Multi-hop wireless networking (e.g., Wireless Mesh Networks, Vehicular Networks) can facilitate various mobile services more effectively than conventional one-hop wireless networking. The focus of our research is given on such issues as multi-hop routing, resource scheduling, frequency channel allocation, DTN (Delay/Disruption Tolerant Networking) techniques and interference handling.

Software-defined networking(SDN) for Internet of Things(IoT)

Software Defined Networking (SDN) is a new networking paradigm which enables centralized network management that allows efficient optimization and configuration. In IoT which will be an extremely diverse networking environment, SDN is the potential solution for IoT resource management.

Professor

Prof. Seung-Jae Han

sjhan cs.yonsei.ac.kr
Resume file (pdf)


3rd Engineering building (Building No.124), C527, Department of Computer Science, Yonsei University
50 Yonsei-ro, Seodaemun-gu, Seoul 03722, Republic of Korea

+82-2-2123-5723

+82-2-365-2579

Research Interests

Wireless networks, Multimedia networking, Embedded systems, Sensor networks, Telemetric services

Employment

  • Yonsei University, Seoul, Korea, Professor

    September, 2005 ~ Now

  • Bell Laboratories, Lucent Technologies, Murray Hill, NJ, Member of Technical Staff

    July, 1999 ~ August, 2005

  • University of Michigan, Ann Arbor, MI, Post-doctoral Research Scientist

    September, 1998 ~ July, 1999

  • Education

  • University of Michigan , Ann Arbor , MI Ph.D., Computer Science & Engineering, August 1998 Thesis Title: Low-Cost Failure Recovery for Real-Time Communication in Multi-Hop Networks, Advisor: Kang G. Shin
  • Seoul National University, Seoul, Korea M.S., Computer Engineering, February 1991
  • Seoul National University , Seoul , Korea B.S., Computer Engineering, February 1989
  • Honour and Award

  • Teaching Excellence Award, Yonsei University (2006)
  • OKAWA Foundation Research Grant (2006)
  • Bell Laboratories Teamwork Award (2003, 2005)
  • Bell Laboratories President's Silver Award (2002)
  • Samsung Human-Tech Thesis Bronze Prize (1998)
  • University of Michigan Summer Research Fellowship (1993)
  • Members

    Alumni

    Journal Papers

    • K. Lee, H. Kim, S. Park, and Seungjae Han, "Satisfying the Target Network Lifetime in Wireless Sensor Neworks", to appear in Computer Networks, Elsevier
    • S. Kim, Y. Jeong, and Seungjae Han, "Use of Contact Duration for Message Forwarding in Intermittently Connected Mobile Networks", to appear in Computer Networks, Elsevier
    • K. Lee, Y. Kim, H. Kim, and Seungjae Han, "A Myopic Mobile Sink Migration Strategy for Maximizing Lifetime of Wireless Sensor Networks", Wireless Networks, Springer, Vol. 20, No.2, page 303 - 318, February 2014
    • M. Song, S. Moon, and Seungjae Han, "Self-Optimization of Handover Parameters for Dynamic Small Cell Networks" to appear in Wireless Communications and Mobile Computing, Wiley
    • Y. Jeong, J. Kim, and Seungjae Han, "Interference Mitigation in Wireless Sensor Networks using Dual Heterogeneous Radios", Wireless Networks, Springer, Vol. 17, No.7, page 1699 - 1713, July 2011
    • E. Talipov, H. Shin, Seungjae Han, and H. Cha, "A Lightweight Stateful Address Autoconfiguration for 6LoWPAN", Wireless Networks, Springer, Vol. 17, No.1, page 183 - 197, January 2011
    • Y. Bejerano, K. Lee, Seungjae Han, and A. Kumar, "Single-Path Routing for Life Time Maximization in Multi-hop Wireless Networks", Wireless Networks, Springer, Vol. 17, No.1, page 263 - 275, January 2011
    • H. Choi and Seungjae Han, "Domain Load Balancing Routing for Multi-Gateway Wireless Mesh Networks", Wireless Networks, Springer, Vol. 16, No.8, page 2105 - 2122, November 2010
    • Y. Bejerano, Seungjae Han, and M. Smith, "A Novel Frequency Planning Algorithm for Mitigating Unfairness in Wireless LANs", Computer Networks, Elsevier, Vol. 54, No.15, page 2575 - 2590, October 2010.
    • S. Cho, H. Shin, Seungjae Han, H. Cha, and R. Ha, ¡°Density-Adaptive Network Reprogramming Protocol for Wireless Sensor Networks¡±, Wireless Communications and Mobile Computing, Wiley, Vol. 10, No. 6, page 857 - 874, June 2010.
    • S. Sim, J. Park, Seungjae Han, and S. Lee, "Seamless IP Mobility Support for Flat-Architecture Mobile WiMAX Networks", IEEE Communications Magazine. Vol. 47, No. 6, page 142 - 149, June 2009.
    • Y. Bejerano and Seungjae Han, "Cell Breathing Techniques for Load Balancing in Wireless LANs," IEEE Transactions on Mobile Computing, Vol. 8, No. 6, page 735 - 749, June 2009.
    • S. Park, Seungjae Han, S. Cho, "User Utility Discovery for Priority-based Network Resource Pricing", Computers & Industrial Engineering, Elsevier, Vol. 56, No. 4, page 1357 - 1368, May 2009.
    • D. Ko, Seungjae Han, H. Cha, and R. Ha, "A traffic control system for IEEE 802.11 networks based on available bandwidth estimation", Wireless Communications & Mobile Computing, Wiley, Vol. 8, No. 4, page 409-419, May 2008
    • J. Park and Seungjae Han, "Load Balancing for video streaming services in hierarchical wireless networks," Computer Networks, Elsevier, Vol. 52, No.1, page 259 - 274, Jan 2008.
    • Seungjae Han and T. Klein, "User Assignment Strategies for Throughput Maximization in Hierarchical Wireless Networks," International Journal of Wireless and Mobile Computing, Inderscience, Vol. 2, No. 4, page 337-349, Dec 2007.
    • Kwon, H. Cha, Seungjae Han, and R. Ha, "Empirical evaluation of receiver-based TCP delay control in CDMA2000 networks," International Journal of Communication Systems, Wiley, , Vol. 20, No. 8, page 927-941, August 2007.
    • Y.Bejerano, Seungjae Han, and A. Kumar, "Efficient Load Balancing Routing for Wireless Mesh Networks," Computer Networks, Elseviers , Vol. 51, No.10, page 2450 - 2466, July 2007.
    • Y.Bejerano, Seungjae Han, and L. Li, "Fairness and Load Balancing in Wireless LANs using Association Control," IEEE/ACM Transactions on Networking, Vol. 15, No. 3, page 560-573, June 2007.
    • T. Klein and Seungjae Han, "Assignment Strategies for Mobile Data Users in Hierarchical Overlay Networks: Performance of Optimal and Adaptive Strategies," IEEE Journal on Selected Areas in Communications, Vol. 22, No. 5, page 849 - 861, June 2004.
    • M. Buddhikot, G. Chandranmenon, Seungjae Han, Y. Lee, S. Miller, and L. Salgarelli., "Design and Implementation of a WLAN/CDMA2000 Interworking Architecture," IEEE Communications Magazine, Vol. 41, No. 11, page 90 - 100, November 2003.
    • Seungjae Han and K. G. Shin, "Experimental Evaluation of Behavior-based Failure-Detection Schemes in Real-time Communication Networks," IEEE Transactions on Parallel and Distributed Systems , Vol. 10, No. 6, page 613 - 626, June 1999.
    • K. G. Shin, T. Abdelzaher, Seungjae Han, J. Reumann, and E. Abram-Profeta., "Multimedia-Friendly Server and Communication Design," IEEE Multimedia, Vol. 6, No. 2, page 84 - 90, April 1999.
    • K. G. Shin and Seungjae Han, "Fast Low-cost Failure Recovery for Reliable Real-time Multimedia Communication," IEEE Network, Vol. 12, No. 6, page 56 - 63, November 1998.
    • Seungjae Han and K. G. Shin, "A Primary-backup Channel Approach to Dependable Real-time Communication in Multi-hop Networks," IEEE Transactions on Computers, Vol. 47, No. 1, page 46 - 61, January 1998.
    • Seungjae Han and K. G. Shin, "Fast Restoration of Real-time Communication Services from Component Failures in Multi-hop Networks", ACM SIGCOMM Computer Communication Review, Vol. 27, No. 4, page 77-88, October, 1997.

    Conference Papers

    • J. W. Sung, Seungjae Han, "Data Bundling for Energy Efficient Communication of Wearable Devices", IEEE LCN 2015
    • J. Han, Seungjae Han, "Nonintrusive Estimation of Expected Throughput for IEEE 802.11 Devices", IEEE CCNC, Jan. 2014
    • S. H. Moon, Seungjae Han, Sunju Park, "Energy Efficient Flow Control and Routing for Clustered Wireless Sensor Networks", the 24th International Conference on Information Networking, IEEE ICOIN 2013, jan 2013
    • Y. S. Jeong, S. H. Kim and Seungjae Han, "Link Configuration and Message Forwarding for Intermittently Connected Mobile Networks", IEEE SECON 2012.
    • S. H. Kim and Seungjae Han, "Contour Routing for Peer-to-Peer in Cellular Networks", IEEE COMSNETS, Jan. 2012.
    • Y. Kim, K. Lee, S. Sim, Seungjae Han, "A Simple Myopic Mobile Sink Strategy for Wireless Sensor Networks" IEEE IPCCC, Nov. 2011
    • S. Choi, S. Park, D. Kang, Seungjae Han, and H. Kim, "A Microgrid Energy Management System for Inducing Optimal Demand Response", IEEE SmartGridComm, Oct. 2011.
    • J. Kang and Seungjae Han, "Network Selection for Heterogeneous Multi-Service Wireless Networks", IEEE LCN, Oct. 2010
    • Y. Bejerano, H. Chio, Seungjae Han, and T. Nandagopal, "Performance Tuning of Infrastructure-Mode Wireless LANs", IEEE WiOPT, May. 2010
    • S. Moon and Seungjae Han, "Benefits of Dual-radio Wireless Sensor Networks", IEEE CCNC, Jan. 2010
    • J. Kim, Y. Jeong, and Seungjae Han, "Experimental Analysis of Interference in Dual-Radio Wireless Sensor Networks", IEEE CCNC, Jan. 2010
    • Seungjae Han, T. Nandagopal, Y. Bejerano, and H. Choi, "Analysis of Spatial Unfairness in Wireless LANs", IEEE INFOCOM, April. 2009
    • Y. Kim, Seungjae Han, "Proxy Mobile IP extension for Mobile Multimedia Multicast Services", IEEE CCNC, Jan. 2009
    • S. Sim, S. Park, S. Kim, Seungjae Han, "Use of Incomplete Timestamp Records for Hospital Simulation Analysis", HICSS, Jan. 2009
    • Y.Bejerano, Seungjae Han, K. Lee, and A. Kumar, " Single-Path Routing for Life Time Maximization in Multi-hop Wireless Networks", IEEE LCN, Oct. 2008
    • H. Choi and Seungjae Han, "Load Balancing Routing for Wireless Mesh Networks: An Adaptive Partitioning Approach", IEEE CCNC, Jan. 2008
    • Y.Bejerano and Seungjae Han, "Cell Breathing Techniques for Load Balancing in Wireless LANs," IEEE INFOCOM, April 2006.
    • H. Kim, Seungjae Han, J. Song, " Maximum Lifetime Paths for the High Packet Delivery Ratio using Fast Recovery in a Mobile Ad Hoc Network", Lecture Notes in Computer Science, Springer-Verlag, vol 3992, 2006
    • H. Kim, Seungjae Han, J. Song, "A Routing Protocol for Throughput Enhancement and Energy Saving in Mobile Ad Hoc Networks", Lecture Notes in Computer Science, Springer-Verlag, vol 3981, 2006
    • Y.Bejerano, Seungjae Han, and L. Li, "Fairness and Load Balancing in Wireless LANs using Association Control," ACM MOBICOM, page 315 - 329, September 2004.
    • Seungjae Han and T. Klein, "Performance Analysis of Adaptive and Online Assignment Strategies for Wireless Data Users in Hierarchical Overlay Networks," IEEE GLOBECOM, December 2003.
    • T. Klein and Seungjae Han, "Assignment Strategies in Wireless Overlay Networks: Stability and Performance Analysis," The 37th Annual Conference on Information Sciences and Systems (CISS) , March 2003.
    • M. Buddhikot, G. Chandranmenon, Seungjae Han, Y. W. Lee, S. Miller, and L. Salgarelli, "Integration of 802.11 and Third-Generation Wireless Data Networks," IEEE INFOCOM, page 503 - 512, March 2003.
    • Seungjae Han and K. G. Shin, "Efficient Spare-resource Allocation for Fast Restoration of Real-time Channels from Network Component Failures," IEEE RTSS, page 99 - 108, December 1997
    • Seungjae Han and K. G. Shin, "Fast Restoration of Real-time Communication Services from Component Failures in Multi-hop Networks," ACM SIGCOMM, page 77 - 88, September 1997.
    • Seungjae Han and K. G. Shin, "Experimental Evaluation of Failure-detection Schemes in Real-time Communication Networks," IEEE FTCS, page 122 - 131, June 1997.
    • Seungjae Han, H. Rosenberg, and K. G. Shin, "DOCTOR : An Integrated Software Fault Injection Environment for Distributed Real-time Systems," IEEE Computer Performance and Dependability Symposium (IPDS) , page 204 ~ 213, April 1995.
    • Seungjae Han, K. G. Shin, and J. Park, "A Non-intrusive Distributed Monitoring Support in Fault Injection Experiments," IEEE Workshop on Evaluation Techniques for Dependable Systems , 1995.
    • Seungjae Han and K. G. Shin, "DOCTOR : An Integrated Software Fault Injection Environment," IEEE International Workshop on Integrating Error-Models with Fault Injection , 1994.

    Patents

    • M. Buddhikot, G. Chandranmenon , Seung-jae Han, Y. Lee, S. Miller, L. Salgarelli "Integrated Web Cache", US Patent 8,174,982, May 8, 2012
    • Y. Bejerano, S. Golestani, S. Han, M. Smith, "Methods and devices for associating a mobile device to access points within a WLAN", US patent 8,254,347, August 28, 2012
    • M. Buddhikot, G. Chandranmenon , Seung-jae Han, Y. Lee, S. Miller, L. Salgarelli "Mobility access gateway", US Patent 8,332,914, Dec. 11, 2012
    • Y. Bejerano, S. Han, M. Smith, "Frequency planning method for wireless LANs", US patent 8,374,131, February 12, 2013
    • Y. Bejerano, S. Han, "Methods and devices for balancing the load on access points in wireless local area networks", US patent 8,559,358, October 15, 2013
    • Y. Bejerano, Seung-jae Han, L. Li, "Fairness and load balancing in wireless LANs using association control," US Patent 7,836,181, Nov.16, 2010
    • Seung-jae Han, T. Klein, "User assignment strategies for hierarchical and other overlay networks", US Patent 7,586,872, Sep. 8, 2009
    • Seung-jae Han, T. Klein, "Method for scheduling users in a hierarchical network", US Patent 7,577,121, Aug. 18, 2009
    • M. Buddhikot, G. Chandranmenon , Seung-jae Han, Y. Lee, S. Miller, L. Salgarelli "Mobility access gateway", US Patent 7,562,393, Jul. 14, 2009
    • M. Buddhikot, G. Chandranmenon , Seung-jae Han, Y. Lee, S. Miller, L. Salgarelli "Integrated Web Cache", US Patent 7,499,401, March 3, 2009.
    • Y. Bejerano, J. Golestani, Seung-jae Han, M. Smith, "Methods and devices for determining the adjacency of access points in a wireless network¡±, US Patent 7,430,189, Sep. 30, 2008.

    Contact us



    3rd Engineering building (Building No.124), C531-1 Mobile Networking Lab, Department of Computer Science, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul 03722, Republic of Korea


    +82-2-2123-7751