Jihun Ha

1. 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  

1. 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 4.0, 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

1. 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)

1. Awards and Honors

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

1. 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

1. 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