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Seamless Lawful Interception Handover for 3G IP Multimedia Subsystem (IMS)
( Hoh Peter In ),( Myoungrak Lee ),( Dohoon Kim ),( Nunghoe Kim ),( Byungsik Yoon ) 한국인터넷정보학회 2011 KSII Transactions on Internet and Information Syst Vol.5 No.7
After the 9.11 terror attack, lawful Interception (LI) has emerged as an important tool for anti-terrorist activity. Law enforcement agents and administrative government bodies effectively monitor suspicious target users of permanent IP-based network devices by LI in Packet Data Networks (PDNs). However, it is difficult to perform LI in monitoring migrating users from a location to another, who change their IPs due to the proliferation of portable Internet devices enabling 3G IP Multimedia Subsystems (IMS). The existing, manual handover technique in 3G IMS makes it even more difficult to continue the LI activities due to time-lag reissuance of LI authority warrants when the target users move to a new LI jurisdiction via a roaming service. Our proposed model is a seamless LI handover mechanism in 3G IMS to support mobility detection of the target users. The LI warrants are transferred to the new LI agent automatically with the target users when they move to a new LI jurisdiction. Thus, time-lag human intervention of reissuance of the LI warrants is removed and enables the LI authorities to continue monitoring. In the simulation of our proposed mechanism, the quality of lawful interception achieves a mean score of over 97.5% out of the possible 100% maximum score, whereas the quality of the existing mechanism has a mean score of 22.725%.
이택 ( Taek Lee ),인호 ( Hoh Peter In ) 한국정보처리학회 2009 한국정보처리학회 학술대회논문집 Vol.16 No.2
사용자의 인터넷 소비성향을 파악하고 그에 적응적인 인프라 리소스를 제공하는 일은 네트워크 설계/관리자나 인터넷 서비스 공급자(ISP)들에게는 주요 관심사이다. 이러한 분석은 한정된 네트워크 자원을 보다 적절한 지점에 효율적인 방식으로 투자하도록 도와준다. 본 논문은 각종 인터넷 서비스를 활용하는 사용자들의 서비스(각종 인터넷 어플리케이션) 소비성향을 네트워크 트래픽 관찰만으로 파악할 수 있는 성향분류 척도를 제안한다. 아울러 베이지안 분류기를 사용하여 제안 척도를 활용한 사용자 성향 분류 방법을 함께 제시한다.
VIRE: Sailing a Blue Ocean with Value-Innovative Requirements
Kim, Sangsoo,In, Hoh Peter,Baik, Jongmoon,Kazman, Rick,Han, Kwangsin IEEE 2008 IEEE software Vol.25 No.1
<P>An effective way for software development organizations to survive in competitive markets is to make competition irrelevant through requirements that create new value. Value-Innovative Requirements Engineering is a novel requirements-engineering process to support this market approach. VIRE is based on the blue-ocean strategy for creating an uncontested new market space that satisfies new customer desires and needs. The VIRE process guides the creation of new value for potential customers, using blue oceanís ERRC (eliminate, reduce, raise, and create) requirements analysis process as well as quantitative requirements analyses. A case study shows how VIRE created significant new market value.</P>