Jihun Ha

Jihun Ha

Curriculum Vitae

Publications

• Jihun Ha, K. Lee, H. Kim and I. Kang, "A Snooping Rate Adaptation Algorithm for IEEE 802.11 WLANs", International Symposium on Wireless Pervasive Computing (ISWPC) 2008.
• Juhong Min, Jihun Ha, Sangki Yun, Inhye Kang, and Hyogon Kim, "Secure Vehicular Communication for Safety Application – A Measurement Study", IEEE Vehicular Technology Conference (VTC)-spring 2008
• JeongGil Ko, Jihun Ha, Bum-sik Park, Seung-goo Lee, Hak-Lim Ko, “Virtual Mobile Backbones for Wireless Ad-hoc Networks with the support of Directional Array Antennas”, International Symposium on Wireless Pervasive Computing (ISWPC) 2007

Skills

• Programming Language: C, C++, JAVA, MFC
  • Implemented a mobile game which works on mobile devices such as cellular phone.
  • Implemented DRM(Digital Rights Management) system by using hooking technique
  • Implemented a communication protocol of V2V communication by using socket programming

• Simulation Tool: QualNet 4.5, NS-2
  • Modified simulator sources to remove a part of CRC checksum at MAC
  • Modified standard IEEE 802.11, 802.16 module
  • Manipulations for beaconing mechanism in 802.11p

• Device Driver: Madwifi, Linux network device driver
  • Modified management frame to add new information
  • Modified management frame processing to use new information
  • Implemented the rate adaption algorithm for improved performance

• OS: Linux
  • Modified TCP sources in Linux kernel to add other TCP option type
  • Implemented Transport Protocol like UDP in Linux kernel
  • Implemented Network Device Driver in Linux Kernel
  • Modified some sources in Linux kernel, such as File system, Network system and so on

Research Interests

• Rate Adaptation Mechanism over IEEE 802.11 WLAN
• Vehicular Ad hoc Network over IEEE 802.11p
• Vertical Handover between WLAN and WMAN
• Network Coding
• Software Defined Radio
• IEEE 802.11, 802.16, 802.16e (Mobile WiMAX)

Projects

• Developing Efficient Support Mechanisms for Internet Traffic in 802.16 Base Station, POSDATA Corporation (Mar. 2008 – Jan. 2009)
• Development of Security-Quality Guarantee Technology in Resilient Network, Ministry of Knowledge Economy (Mar. 2008 - Feb. 2010)
• Development of New Active Detection Mechanism and Counterplot against Botnet , Korea Information Security Agency (Mar. 2008 – Feb. 2011)
• U-Zone community technology, Ministry of Information and Communication (April. 2006 – Feb. 2011 )
• Vehicular network framework based on WiBro-WiFi interworking, Ministry of Education, Science and Technology (May. 2009 – present)
• Rate Diverse Network Coding: Breaking the Broadcast Bottleneck - Sora Invitation for Proposals 2010, Microsoft Research (March. 2010 - present)

Awards and Honors

• College Scholarship, Korea University, 2004(2st semester), 2005 (1st semester)

Education

• Ph.D. in Computer Science, Mar. 2010 – present (1st semester)

Wireless Data Communication Laboratory

Korea University, South Korea

Advisor: Dr. Hyogon Kim

• M.S in Computer Science, Mar. 2008 – Feb. 2010

Wireless Data Communication Laboratory

Korea University, South Korea

Advisor: Dr. Hyogon Kim

• Bachelor of Science (B.S) in Computer Science, Mar. 2004 - Feb, 2008

Korea University, South Korea

Contact Information

• Postal mail

Korea University

School of Information and Communication

Anam-dong 5-1 Sungbuk-gu

Seoul 136-701, South Korea

• Web: http://widen.korea.ac.kr
• Email: jhha85@korea.ac.kr
• Messenger: bobsang2000@hotmail.com (MSN)
• Phone: +82-2-3290-3569
• Mobile: +82-10-2533-7947