Model and Architecture of User-Defined Networks for Seamless Mobility Management in Diverse Wireless Environment

다양한 무선 환경에서 끊김 없는 이동성 관리를 위한 사용자 정의 네트워크 모델 및 구조

  • Chun, Seung-Man (School of Electrical Engineering and Computer Science, Kyungpook National University) ;
  • Nah, Jae-Wook (School of Electrical Engineering and Computer Science, Kyungpook National University) ;
  • Lee, Seung-Mu (School of Electrical Engineering and Computer Science, Kyungpook National University) ;
  • Choi, Jun-Hyuk (School of Electrical Engineering and Computer Science, Kyungpook National University) ;
  • Park, Jong-Tae (School of Electrical Engineering and Computer Science, Kyungpook National University)
  • 천승만 (경북대학교 전자전기컴퓨터학부) ;
  • 나재욱 (경북대학교 전자전기컴퓨터학부) ;
  • 이승무 (경북대학교 전자전기컴퓨터학부) ;
  • 최준혁 (경북대학교 전자전기컴퓨터학부) ;
  • 박종태 (경북대학교 전자전기컴퓨터학부)
  • Received : 2011.08.29
  • Published : 2011.11.25

Abstract

In this paper, we propose a novel architecture for seamless mobility management to provide users with seamless Internet connection when users roam between diverse wireless local area networks (WLANS) controlled by different management entities. There have been many researches in IETF, i.e., MIPv6, HMIPv6, and PMIPv6, to provide the mobility management. However, practically since wireless access points or access routers, which are managed by an individual manager or ISP managers, have different authentication scheme and the supported mobility management, the previous mobility management protocol developed by IETF can not guarantee the quality of service of application services as the mobile node performs the handover. To solve this drawback, we propose the mobility management scheme to provide QoS-guaranteed Internet services during the handover by configurating the wireless networks which is defined by users. More specifically, we present a model, the architecture and an algorithm for user-defined network (UDN) to provide the seamless Internet service. Finally, the performance of the proposed algorithm is evaluated by the network simulation tool.

본 논문에서는 사용자가 각기 다른 구조를 가진 다양한 무선랜 네트워크 (Wireless Local Area Network) 들 간 핸드오버시 사용자에게 끊김 없는 인터넷 연결을 제공하기 위한 새로운 이동성 관리 구조 및 모델을 제시한다. IETF에서는 MIPv6와 이를 확장한 HMIPv6, PMIPv6 등의 많은 이동성 관리를 위한 연구가 진행되었지만 현실적으로 무선 접속점이 서로 다른 개인 관리자 또는 ISP에 의해 관리되고 있기 때문에 접속 인증 방법 및 이동성 프로토콜이 달라 이러한 이동성 관리 프로토콜은 이동 단말의 핸드오버 시 응용 서비스에 대한 QoS (Quality of Service)를 보장 할 수 없다. 이러한 문제점을 해결하기 위해 본 논문에서는 사용자가 무선 네트워크를 생성하여 핸드오버 시 QoS를 보장하는 이동성 관리 방법을 제안한다. 더욱 자세히는, 끊김 없는 인터넷 서비스를 제공하기 위한 사용자 정의 네트워크의 모델, 구조 및 알고리즘을 제시한다. 마지막으로, 네트워크 시뮬레이터 2 (Network Simulator Tool 2)를 이용하여 제안된 알고리즘에 대한 성능 분석을 하였다.

Keywords

References

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