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Jeongkeun Lee


Post Doctoral Researcher

Hewlett-Packard Laboratories

1501 Page Mill Road, M/S 1181

Palo Alto, CA 94304

tel: 650.857.7536

fax: 650.852.3791
jklee78 AT gmail DOT com

jklee AT hp DOT com


 

This page is not maintained any more. Please visit http://www.hpl.hp.com/people/jklee/ for latest updates.

 

I am a Post Doc researcher and a member of Network Architectures, Protocols, and Applications (NAPA) Research Group. NAPA research group is a part of Mobile & Media Systems Lab, HP Labs in Palo Alto, CA.
I received B.S. and Ph.D. degrees from the School of Computer Science and Engineering, Seoul National University, in 2001 and 2007 respectively. My faculty advisors were Prof. Yanghee Choi and Prof. Taekyoung Kwon who are leading Multimedia & Computer Communications Lab. The dissertation PDF is available here.

Research Area

  • Wireless Mesh Network
    • Management architecture and relevant algorithms
    • Wireless link characterization
  • Target Tracking & Localization in wireless sensor/cellular networks

Publications

International Journal

·         Jeongkeun Lee, Sung-Ju Lee, Wonho Kim, Daehyung Jo, Taekyoung Kwon, and Yanghee Choi, “Understanding Interference and Carrier Sensing in Wireless Mesh Networks,`` To appear in IEEE Communications Magazine, 2008. [PDF]

·         Jeongkeun Lee, Kideok Cho, Seungjae Lee, Taekyoung Kwon and Yanghee Choi, "Distributed and energy-efficient target localization and tracking in wireless sensor networks," Elsevier Computer Communications (COMCOM), Vol. 29, No. 13-14, pp. 2494-2505, August 2006. [PDF]

International Conference/Workshop

  • Jiho Ryu, Jeongkeun Lee, Sung-Ju Lee, and Taekyoung Kwon, "Revamping the IEEE 802.11a PHY Simulation Models," to appear in Proc. of the 11th ACM/IEEE Intl. Symposium on Modeling, Analysis and Simulation of Wireless and Mobile Systems (MSWIM'08), Vancouver, British Columbia, Canada, October 2008. (Acceptance ratio: 40/188=21.3%; Best paper candidate)  [PDF]
    • This work was also presented in ACM MobiCom 2008 poster session. (Refereed Poster)
  • Daehyung Jo, Jeongkeun Lee, Semun Lee, Taejoon Ha, Taekyoung Kwon, and Yanghee Choi, "Signal Dragging: Effects of Terminal Movements on War-Driving in CDMA/WCDMA Networks", in Proc. of 3rd International Symposium on Location-and Context-Awareness (LoCA 2007), Sep. 2007, Oberpfaffenhofen, Germany. (Acceptance ratio : 17/55=30.9%, This paper is also invited and published in LNCS 4718, pp. 211-227). [PDF]
  • Jeongkeun Lee, Wonho Kim, Sung-Ju Lee, Daehyung Jo, Jiho Ryu, Taekyoung Kwon, and Yanghee Choi, “An Experimental Study on the Capture Effect in 802.11a Networks,`` in Proc. ACM WinTech 2007, Montreal, Canada, Sep. 2007. [PDF]
  • Jeongkeun Lee, Sung-Ju Lee, Wonho Kim, Daehyung Jo, Taekyoung Kwon, and Yanghee Choi, “RSS-based Carrier Sensing and Interference Estimation in 802.11 Wireless Networks,`` in Proc. IEEE SECON 2007, San Diego, CA, June 2007. (Acceptance ratio:21.3%=63/296) [PDF]
  • Wonho Kim, Jeongkeun Lee, Taekyoung Kwon, Sung-Ju Lee, and Yanghee Choi, “Quantifying the Interference Gray Zone in Wireless Networks: A Measurement Study,`` in Proc. IEEE International Conference on Communications (ICC) 2007, Glasgow, Scotland, June 2007. [PDF]
  • Seungjae Lee, Jeongkeun Lee, Jaeyoung Choi, Taekyoung Kwon and Yanghee Choi, “UbiQuest: A P2P-based Resource Discovery System for Ubiquitous Computing,” in Proc. ICOIN 2007, Estoril, Portugal, Jan. 2007. (Acceptance ratio: about 30%~=xx/305) [PDF]
  • Semun Lee, Jeongkeun Lee, Taekyoung Kwon, Yanghee Choi, Taejoon Ha and Taeil Kim, “Use of AGPS Call Data Records for non-GPS Terminal Positioning in Cellular Networks,” in Proc. WINSYS 2006, Portugal, August 2006. (Acceptance ratio: about 18%) [PDF]
  • Jaekyu Cho, Jeongkeun Lee, Taekyoung Kwon and Yanghee Choi, “Directional Antenna at Sink (DAaS) to Prolong Network Lifetime in Wireless Sensor Networks,” in Proc. European Wireless 2006, Athens, Greece, April 2006. [PDF]
  • Jeongkeun Lee, Dongkyun Kim, C. K. Toh, Taekyoung Kwon and Yanghee Choi, "A Table-driven AOA Estimation Algorithm for Switched-beam Antennas in Wireless Networks," in Proc. European Wireless 2005, Nicosia, Cyprus, April 2005.
  • Jeongkeun Lee, Sungjin Kim, Hari Suman, Taekyoung Kwon, Yanghee Choi, Jaewook Shin and Aesoon Park, "Downlink Node Cooperation with Node Selection Diversity," in Proc. IEEE VTC 2005-Spring, Stockholm, Sweden, May 2005. (Acceptance ratio 40.6%=650/1600) [PDF]
  • Jeongkeun Lee, Taekyoung Kwon, Yanghee Choi, Sajal K. Das,  and Kyung-ah Kim, "Analysis of RFID Anti-Collision Algorithms using Smart Antennas," in Proc. ACM 2nd Conference on Embedded Networked Sensor Systems (SenSys 2004), Baltimore, Maryland, November 2004. (Refereed Poster) [PDF]
    • The updated version with an expanded antenna model (MPR: Multi-Packet Reception) is available in my PhD dissertation, chapter 4.
  • Jeongkeun Lee, Dongkyun Kim , J.J.Garcia-Luna-Aceves, Yanghee Choi, Jihyuk Choi, Sangwoo Nam, "Hybrid gateway advertisement scheme for connecting mobile ad hoc networks to the Internet," in Proc. IEEE VTC 2003-spring, Jeju, Korea, April 2003. [PDF]
  • Sooyeon Kim, JeongKeun Lee, Tae Wan You, KyoungAe Kim, and Yanghee Choi, "Hat: A High-quality Audio Conferencing Tool using mp3 Codec," in Proc. INET 2002, Washington, DC, USA, June 2002.

Domestic Journal

  • Taekyoung Kwon, Jeongkeun Lee, Wonho Kim, and Daehyung Cho, “An Introduction to Wireless Mesh Networks: A Focus on Wireless Link Relations and Throughput Analyses,” Communications of the KISS (Korean Information Science Society), Vol. 24, Dec. 2006.
  • Jeongkeun Lee, Taekyoung Kwon, Yanghee Choi, and Kyung-ah Kim, “Improving RFID Anti-Collision Algorithms with Multi-Packet Reception,” Journal of KICS (Korean Institute of Communication and Sciences),  Vol. 31, Nov. 2006.

Domestic Conference/Workshop

  • Kiduck Cho, Jeongkeun Lee, Taekyoung Kwon, and Yanghee Choi, Jaewook Shin and Aesoon Park, " DCMA: Distributed and Asynchronous MAC protocol for MIMO ad hoc networks," KICS Fall Conference '04, Daejeon, Korea, Nov. 2004.
  • Jeongkeun Lee, Taekyoung Kwon, and Yanghee Choi, Jaewook Shin and Aesoon Park, "Performance Improvement Using Receiver Node Selection in Receiver Cooperative Downlink Systems," KICS Fall Conference '04, Daejeon, Korea, Nov. 2004.
  • Hojin Lee, Jeongkeun Lee, Yanghee Choi, Jihyuk Choi, Eungbae Kim, "The effect of competing nodes on routing path selection in IEEE 802.11 ad hoc wireless networks," KICS Conference, Seoul, Oct. 2003.
  • Jeongkeun Lee, Taewan Yoo, Kyoungae Kim, Sooyeon Kim, Youngseok Lee, Yanghee Choi, Jaehoon Jeong, Seungyoon Lee, Youngjin Kim,"Design and Implementation of an IPv6 Multicast based Audio Conferencing Tool using MP3 Codec", KICS Conference, Kwangwoon University, Fall 2001.
  • Jeongkeun Lee, Dongkyun Kim , J.J.Garcia-Luna-Aceves, Yanghee Choi, Jihyuk Choi, Sangwoo Nam, "Mobility-adaptive gateway advertising scheme for connecting mobile ad hoc networks to the Internet," KICS Fall Conference ‘02,  Nov. 2002.
  • Jeongkeun Lee, Dongkyun Kim, Youngseok Lee, Yanghee Choi,"Power-aware Bluetooth Piconet Master election Algorithm", KISS Conference, HanYang University, April 2002.

Patent

  • Jeongkeun Lee, Sung-Ju Lee, and Taekyoung Kwon, “Estimating link interference and bandwidth,” (US Patent Application 20080101331), Oct. 31, 2006.
  • 이정근, 이세문, 권태경, 김태일, 하태준, "이동 통신 단말기의 위치 결정 방법 이를 이용한 위치 결정 시스템" (한국, 출원 10-2006-62534), 2006 6 4.
  • 이정근, 김태일, 이희만, 하태준, 권태경, "거리 비율을 이용한 이동 통신 단말기의 위치 결정 방법 시스템,” (한국, 등록번호 10-0638248), 2006 10 18
  • Jeongkeun Lee, Taekyoung Kwon, Tail Kim, and Taejun Ha, “Method and System for Determining Position of Mobile Communication Device Using Ratio Metric,” (PCT pending PCT/KR2006/002320), Jun. 16, 2006.
  • 이정근, 김수연, 김동석, 권태경, 김경아전자 거래 코드를 이용한 공급체인 관리 시스템 방법  (Korea pending 2005-40657), May 16, 2005.

·         이정근, 전찬호, 권태경, 김경아, "전자태그 판독기 전자태그 인식방법" (Korea pending 10-2004-0076756), Sep. 24, 2004.

 


Awards

·         “RBP: RSS-based Prediction of Carrier Sense and Interference in 802.11 Networks”, awards in ACM MobiCom’07 Student Demo Competition

·         The Popular Demo Award, voted as the best demo by the ACM MobiCom participants, and

·         Second place award, voted by the ACM MobiCom Student Demo Competition judges.

 


International Research Experiences

·         Visiting scholar at HP Labs in Palo Alto, CA, USA (Feb. 2006 – Aug. 2006)

·         Summer Institute Program, Fraunhofer Institute FOKUS, Berlin, Germany (July 2005 – Aug. 2005) supported by KOSEF/DAAD

·         Visiting research, University of California, Santa Cruz, CA, USA (June 2002 - Aug. 2002)


Project Experiences

  • Wireless mesh network management (sponsored by HP, 2006-now)
  • User positioning in cellular networks (sponsored by RadianTech, 2005-now)
  • Design of a real-time tracking RFID system (sponsored by KT, 2004)
  • Cross-layer ad hoc MAC and routing protocol design  (sponsored by ETRI, 2004)
  • Research on IEEE 802.11 based ad hoc network routing protocol  (sponsored by ETRI, 2003)
  • Research on connecting mobile ad hoc network to the Internet (sponsored by ETRI, 2002)
  • Development of fault-tolerant distributed ad-hoc computing system (sponsored by Korean Agency for Defense Development, 2001-2003)
  • IPv6 based Multicast Audio Conferencing Application (sponsored by ETRI, 2001)

Computer Skills

  • Programming Languages: C,C++, JAVA, MFC, HTML/XML, NesC
  • Operating Systems: Linux, MS Windows, NetBSD
  • Tools: NS-2 , Qualnet, Mathematica, Matlab
  • Hardware: Mote, Soekris board, Atheros 802.11 card

I visited

  • Europe: Germany, French, England, Belgium, Netherlands, Switzerland, Italy and Austria. Summer 2000
  • Los Angeles: Convention Center, UCLA and Beverly hills. 2001
  • New York: Broadway, Central Park, Empire state Building, SOHO (South of Houston).. 2001
  • Washington: Lincoln memorial hall. 2002
  • San Francisco. Summer 2002
  • Santa Cruz: University of California at Santa Cruz
  • Monteray & Carmel
  • Yosemite national park: Scenic drive, Glacier point and Sequoia tree
  • Vancouver: Downtown, Victoria and Nanaimo island
  • Banff:  Glacier, Emerald-colored river and rafting (with jumping)
  • Lake Louise, Scenic drive, Emerald lake, Watakawa(?) fall
  • Australia : Melbourne, Tasmania, Sydney. Autumn 2003.
  • Baltimore & Philadelphia. November 2004
  • Cyprus. April 2005.
  • Berlin and German cities, and Praha. Summer 2005.
  • Tokyo, Japan. 2005
  • San Diego, CA. August 2006
  • Bali, Indonesia. September 2007.
  • Montreal, Canada. September 2007.
  • 14 countries in total except Korea.

Last Modified : 12-OCT-2008