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홍충선 경희대학교 산학협력기술연구원 2003 산학협력기술연구논문집 Vol.9 No.-
The network access technologies are being enhanced with rapid growth of Internet. So the Internet user can use the most of Internet without the limitation of the time and space. Internet traffic was increased with the rapid increase of user. Accordingly it became an important issue that who is responsible to be charged of link management and maintenance. Although we must use international charging arrangements for Internet services which are based on one’s usages, there are no standard rules and system for the traffic measurement and traffic accounting. So in this paper, we propose the system which can improve unfair Internet accounting system and classify the traffic types which are measured by traffic measurement agents. And we define the roles of traffic agents which measure network traffic. Also we propose the fault tolerant architecture and efficient traffic measurement methodology for improving operation efficiency of traffic measurement agents Keyword - Internet traffic, management, maintenance, traffic measurement.
홍충선,이대영,Ki-WoonYim,Dong-SikYun 한국전자통신연구원 2002 ETRI Journal Vol.24 No.1
A Mobile IP allows IP hosts to move between different networks without changing their IP addresses. Mobile IP systems supporting local registration were introduced to reduce the number of times a home registration with the remotely located home agent was needed. The local regis- tration Mobile IP scheme enhanced performance by proc- essing registration requests of mobile nodes at a local agent. The local registration approach may affect other aspects of the Mobile IP systems such as fault tolerance. In this paper, we briefly review previous solutions for supporting fault tolerance in local registration Mobile IP systems and pro- pose a fault tolerance protocol with a backup foreign agent in a hierarchical local registration mobile IP to enhance the efficiency of such systems against foreign agent failures. We also describe the specification of the proposed protocol us- ing LOTOS and perform its validation using MiniLite. Fi- nally, we analyze the performance of our proposed fault tolerance protocol through simulation.
홍충선,이종민,최진영,조응준,신승환 한국전자파학회 2012 전자파기술 Vol.23 No.3
최근 폭발적으로 증가하는 모바일 데이터 트래픽을 이동통신망에서 수용하기 위해 통신 사업자 및 표준 단체에서는 새로운 기술들을 연구하고 있다. 특히 단말 간 직접 통신 기술은 기지국의 과부하는 줄여주고, 보다 신속한 통신이 가능하므로 더욱 주목 받고 있다. 또한 주파수 재사용 기술을 통한 주파수 공유가 가능하므로 미래에 발생할 주파수 부족 문제를 해결할 수 있을 것이라고 전망한다. 따라서 본 고에서는 4세대 이동 통신 기술인 LTE-Advanced 망에서의 D2D 통신을 소개하고, 이를 위해 필요한 LTE- Advanced 망에서의 세션 설정, D2D 주파수 할당 메커니즘 기술들에 대하여 소개한다.
관광전공 대학생들의 전공선택동기가 전공만족도와 진로결정 자기효능감에 미치는 영향
홍충선 관광경영학회 2019 관광경영연구 Vol.91 No.-
The purpose of this study is to investigate the motivation effect of major selection among college students of tourism major, and to determine the degree of major satisfaction and self-efficacy of career decision. For the samples, the valid sample of 187 was conducted from May 1, 2019 to May 31, 2019, for college students attending four-year universities in Seoul. The analysis results of this study was analyzed using statistical package of SPSS for Window Version 22.0. The multiple regression analysis was carry out for hypothesis testing. The results of this study are as follows. First, all of the sub-factors of the major selection motive were shown to have a significant effect on the major satisfaction and career decision-making self-efficacy. In addition, while general satisfaction and education satisfaction, which are sub-factors of the major satisfaction, were found to have a significant effect on career decision-making Self-efficacy, awareness satisfaction did not affect career decision-making self-efficacy.