 Assistant Professor Dept. of Software Design & Management
Gachon University (formerly Kyungwon Univ.), Seongnam, Korea
Office: Saerom Bldg 5-4 Tel: +82-31-750-8657, +82-10-9636-2401 e-mail: jchoi at kyungwon·ac·kr
◈ Short Bio Sketch Jaehyuk Choi is currently an assistant professor at the Dept. of Software Design & Management in Gachon university (formerly Kyungwon University), Seongnam, Korea. He received the Ph.D. degree in electrical engineering and computer science from Seoul National University, Korea, in 2008. He was with the Real-Time Computing Laboratory (RTCL) at The University of Michigan, Ann Arbor, U.S.A. as a postdoctoral researcher from Dec. 2009 to Feb. 2011. His current research interests are in the area of wireless/mobile networks with emphasis on wireless LAN/MAN/PAN, vehicular networks, network management, next-generation mobile networks, cognitive radios, data link layer protocols, and cross-layer approaches. ◈ Research Interests · Wireless Networks and Mobile Computing ◈ Courses · Mobile Programming (2012 Spring) (android programming) · Operating System (2012 Spring) · Problem Solving (2011 Fall) · Computer Network (2011 Fall) · Operating System (2011 Spring) ◈ Research/Teaching Experience
· Assistant Professor, Dept. of Software Design & Management, Mar. 2011 – Present Gachon University, Seongnam, Korea · Postdoctoral Researcher, Department of EECS, Dec. 2008 – Feb. 2011
· Postdoctoral Researcher, Department of EECS, Sep. 2008 – Nov. 2008 · Visiting Scholar, Department of Computer Science (CS), Jan. 2006 – Jul. 2006 · Part-time Lecturer, MS Expert Course, BIT Academy, Korea, Jan. 2004 – Nov. 2004 · Teaching Assistant for Data Structure (Prof. Chong-kwon Kim), Spring 2003 Seoul National University, Seoul, Korea ◈ Education · M.S./Ph. D. in Computer Science and Engineering, Seoul National University, Aug. 2008.
· B.S. in Material Science and Engineering, Seoul National University, Feb. 2003. ◈ Work Experience · Software Engineer (Programmer), May 2001 – May 2002 · Software Engineer (Programmer), Jan. 1999 – May 2001
Kunnsoft, Seoul, Korea ◈ Awards & Honors · Korea Research Fund (KRF) Postdoctoral Scholarship, Dec. 2008 - Nov 2009
· Bio listed in Marquis “Who’s Who in the World,” in 2010 · Silver Prize, 13th Samsung Human-tech Awards Contest, Feb. 2007 · BK-21 Scholarship for studying aboard, Jan. 2006 · Prize for Encouragement, 10th Samsung Human-tech Awards Contest, Feb. 2004 · Silver Prize (2nd place), YoungJin.com Technical Writer Awards, Oct. 2002 · Appreciation plaque from Haansoft (Hangul & Computer), Mar. 2002 · Award of Commendation from the Ministry of Government Legislation (thanks for developing Automatic Law Revision System as a main programmer), Dec. 2001 ◈ Publications - Journal Articles· Alexander W. Min, Xinyu Zhang, Jaekyuk Choi and Kang G. Shin, "Exploiting Spectrum Heterogeneity in Dynamic Spectrum Market", to appear at IEEE Transactions on Mobile Computing (TMC), 2012 (SCI, IF=3.406) · Jaehyuk Choi, and Kang G. Shin, "QoS Provisioning for Large-scale Multi-AP WLANs," in Press Elsevier Ad Hoc Networks, vol. 10, no. 2, pp. 174-185, March, 2012. (SCIE, IF-1.592) [available online] · Jaehyuk Choi, Alexander W. Min, and Kang G. Shin, “A Lightweight Passive Online Detection Method for Pinpointing Misbehavior in WLANs”, IEEE Transactions on Mobile Computing (TMC), Nov./Dec. 2011 (SCI, IF=3.406) [available online] · Jaeryong Hwang, Hwaryong Lee, Jaehyuk Choi†, Joon Yoo, and Chong-kwon Kim, " An Efficient Association Control Method in Vehicular Network with Mobile Hotspots”, KSII Transactionsns on Internet and Information Systems, 2011. († Corresponding author) · Jiwoong Jeong, Jaehyuk Choi, Sunghyun Choi, and Chong-kwon Kim, "Resolving Intra-Class Unfairness in 802.11 EDCA," in Press Springer Wireless Personal Communications (WPC), Sep. 2010 (SCIE) [available online] · Jaehyuk Choi, Kihong Park, and Chong-kwon Kim, "Analysis of Cross-Layer Interaction in Multirate 802.11 WLANs," IEEE Transactions on Mobile Computing (TMC), vol.8, no.5, pp.682-693, May 2009 (SCI, IF=3.406) [cited by 4+] · Sungryoul Lee, Jaehyuk Choi, Jongkeun Na, and Chong-Kwon Kim, "Analysis of Dynamic Low Power Listening Schemes in Wireless Sensor Networks," IEEE Communications Letters (CL), vol.13, no.1, pp.43-45, Jan. 2009 (SCI) [cited by 3+] · Jaehyuk Choi, Jongkeun Na, Yeon-sup Lim, Kihong Park, and Chong-kwon Kim, "Collision-aware design of rate adaptation for multi-rate 802.11 WLANs," IEEE Journal on Selected Areas in Communications (JSAC), vol.26, no.8, pp.1366-1375, Oct. 2008 (SCI, ) [cited by 17+] · Jaehyuk Choi, Joon Yoo, and Chong-Kwon Kim, "A Distributed Fair Scheduling Scheme With a New Analysis Model in IEEE 802.11 Wireless LANs," IEEE Transactions on Vehicular Technology (TVT), vol.57, no.5, pp.3083-3093, Sep. 2008 (SCI) [cited by 5+] · Jaehyuk Choi, Joon Yoo, and Chong-kwon Kim, "A Novel Performance Analysis Model for an IEEE 802.11 Wireless LAN," IEEE Communications Letters (CL), vol.10, no.5, pp. 335-337, May 2006 (SCI) [cited by 18+] · Jaehyuk Choi, Joon Yoo, Sunghyun Choi, and Chong-kwon Kim, "EBA: an enhancement of the IEEE 802.11 DCF via distributed reservation," IEEE Transactions on Mobile Computing (TMC), vol.4, no.4, pp. 378-390, July-Aug. 2005 (SCI) [cited by 89+] - International Conferences · Jaehyuk Choi, and Kang G. Shin, "Out-of-Band Sensing with ZigBee for Dynamic Channel Assignment in On-the-move Hotspots," in Proc. IEEE ICNP 2011, Oct. 2011. (acceptance ratio: 16.4%=31/189) · Young-myoung Kang, Jaehyuk Choi, Hayoung Oh, and Chong-kwon Kim, "An MIM-Aware Association Control Scheme for OpenFlow Access Points in NOX Architectures" in Proc. CFI '11: 6th International Conference on Future Internet Technologies, June, 2011. · Hyoil Kim, Jaehyuk Choi, and Kang G. Shin, "Wi-Fi 2.0: Price and Quality Competitions of Duopoly Cognitive Radio Wireless Service Providers with Time-varying Spectrum Availability," in Proc. IEEE INFOCOM 2011, April 2011. · Yeonsup Lim, Jaehyuk Choi, and Chong-kwon Kim, "Practical Application of Physical Energy Detection to recognize starvation in 802.11 Wireless Networks", in Proc. ICOIN 2009, Jan., 2009
· Eunho Yang, Jaehyuk Choi, and Sunglim Lee, "On Selfish Behavior using Asymmetric Carrier Sensing in IEEE 802.11 Wireless Networks", in Proc. IEEE Conference on Local Computer Networks (LCN) 2008, Oct. 2008 · Jaehyuk Choi, Jongkeun Na, Kihong Park and Chong-kwon Kim,"Adaptive Optimization of Rate Adaptation Algorithms in Multi-Rate WLANs" in Proc. IEEE ICNP'07, Beijing, Chana, Oct., 2007 (acceptance ratio: 14.5%=32/220) [cited by 21+] · Yeonsup Lim, Sangsoon Lim, Jaehyuk Choi, Sungho Cho, Chong-kwon Kim and et al., "A Fire Detection and Rescue Support Framework with Wireless Sensor Networks," in Proc. ICCIT 07 · Eunho Yang, Jaehyuk Choi, Chong-kwon Kim and et al.,"An Enhanced Rate Adaptation Strategy for IEEE 802.11 Wireless Ad Hoc Networks" in Proc. IEEE WiCOM'07, Shanghai, China, Sep., 2007 · Jaehyuk Choi, Kihong Park and Chong-kwon Kim,"Cross-layer Analysis of Rate Adaptation, DCF, and TCP in Multi-Rate WLANs," in Proc. IEEE INFOCOM 2007, Anchorage, USA, May 7-11, 2007. (Acceptance ratio: 18%~=252/1400+) [cited by 34+] · Jongkeun Na, Jaehyuk Choi, Seongho Cho, Chong-kwon Kim, et al.,"A Unified Route Optimization Scheme for Network Mobility" , in Proc. PWC 2004 (LNCS 3260), Delft, Netherlands, Sep. 2004 · Jaehyuk Choi, Joon Yoo, Chong-kwon Kim, "A Closed Queueing Network Model for Describing the Backoff Procedure of the IEEE 802.11 DCF" ACM Mobicom 2004 student poster session, Philadelphia, Pennsylvania, Sep. 2004 (refereed poster) - Domestic (Korean) Journals and Conferences · Jaehyuk Choi, and Chong-kwon Kim, “A Lightweight Receiver-side Method for Estimating the Number of Contending Terminals in Wi-Fi Networks,” KISSE, Mar. 2011 · Jaehyuk Choi, and Chong-kwon Kim, “Adaptive Rate Adaptation Algorithm in 802.11 WLANs,” in Proc. SWCC 2007, Aug. 2007 · Jaehyuk Choi, and Chong-kwon Kim, “A New Collision Resolution Method in 802.11 DCF,” in Proc. KISS 2003, Oct. 2003 - Patents · Jaehyuk Choi, Chong-kwon Kim, and et al., “Apparatus and method for deciding on vertical handoff,” US patent US 7773563, Aug. 10, 2010
◈ Research Project · An Intelligent Convergence System of Urban Information for Smart (Ubiquitous) Cities,Seoul R&DB, Worked as Project Manager (PM), Dec. 2007 – Nov. 2008 · Developing Management/Control Algorithms for Large-scale Multi-Purpose Sensor Networks, KOSEF, Worked as Project Manager (PM) Jan. 2005 – Dec. 2005 · Developing Handoff Protocols/Algorithms for Relay/Mesh Networks, Telecommunication R&D Center, Samsung Electronics Jul. 2004 – Dec. 2005 · Developing Protocols/Algorithms for Heterogeneous Handover — IEEE 802.21, Telecommunication R&D Center, Samsung Electronics Aug. 2004 – Jun. 2005 · Developing Protocols/Algorithms for Mobile Networks — IEEE 802.16, Telecommunication R&D Center, Samsung Electronics Apr. 2003 – Mar. 2004 · Software Core Research for Next Generation Multimedia Mobile Terminals, KOSEF Mar. 2003 – Aug. 2004 ◈ Invited Talks · Jaehyuk Choi, “Collision-aware Design of Rate Adaptation in Multi-rate WLANs”- Korea University, Oct. 2008 · Jaehyuk Choi, "Energy-Efficient Design of Wi-Fi Tethering in Battery-powered Mobile Devices" - Seoul National University, Jul. 2010 · Jaehyuk Choi, “A Lightweight Passive Online Detection Method for Pinpointing Misbehaving Users in Wireless Network Systems” - Seoul National University, Feb. 2011 · Jaehyuk Choi, “Exploiting Secondary Low-Power Radios for Better On-the-Move Wireless Internet Connection” - Korea University, May 2011 · Jaehyuk Choi, “Exploiting Heterogenous Radios for Better On-the-Move Wireless Internet Connection” - Kookmin University, Nov. 2011 ◈ Computer Skill · Languages: C, C++, Visual C++, Java, Tcl, NesC.· Statistical Packages: Octave, MATLab. · Simulation Tools: network simulator-2 (ns2) · Operating Systems: Windows, Unix/Linux. ◈ Professional Activities · Technical Referee: (Journals) IEEE Transactions on Mobile Computing, IEEE Transactions on Vehicular Technology, IEEE Transactions on Wireless Communications, IEEE Networks Magazine, IEEE Communications Letters, Elsevier Computer Communications, Elsevier Performance Evaluation, Springer Wireless Personal Communications, KICS Journal on Communications and Networks; (Conferences) IEEE Infocom ’04, IEEE Globecom ’05 ’06 ’09, ICOIN ’05 ’07, IEEE ICC ’05, ACM WoWMoM ’05, IEEE WCNC ’06, IEEE WCNC ’08, IWCMC ’09 MY LINK : JOURNAL INFORMATION |