Global Mobility Support in Network Based Proxy Mobile IPv6

네트워크 기반 프록시 모바일 IPv6에서 글로벌 이동 지원에 관한 연구

  • 풍기아킴 (공주대학교 정보통신공학부 전파공학) ;
  • 노승환 (공주대학교 정보통신공학부 전파공학)
  • Received : 2010.05.30
  • Accepted : 2010.06.09
  • Published : 2010.07.31

Abstract

The Proxy Mobile IPv6 (PMIPv6) is a network localized mobility management protocol that is independent of global mobility management protocols. In a single mobility domain (LMD), the mobile node (MN) is not involved in any IP mobility-related signaling and uses only its PMIPv6 home address for all its communication. Subsequently, when the MN moves into another LMD, the MN must change its PMIPv6 home address. In such a circumstance, host-based mobility signaling is activated. Thus, the nature of the network-based mobility of the PMIPv6 cannot be retained. Additionally, if the MN does not support global mobility, it cannot maintain communication with its correspondent node (CN). In this paper, we propose a solution for global mobility support in PMIPv6 networks, called Global-PMIPv6 that allows current communication sessions of a MN without mobility protocol stacks to be maintained, even when the MN moves into another LMD. Thus, Global-PMIPv6 retains the advantages of the PMIPv6 for global mobility support. We then evaluate and compare network performance between our proposed solution and PMIPv6.

PMIPv6(Proxy MIPv6)는 네트워크 기반의 도메인 내 이동(network localized mobility)만을 지원하는 프로토콜이며 글로벌 이동은 지원하지 않는다. 한 도메인(LMD)에서 MN(Mobile Node)는 통신중에 IP 계층의 이동에 필요한 시그널링에 간여하지 않으며, 오직 PMIPv6 홈 주소(home address)만을 사용한다. 따라서 MN가 다른 도메인으로 이동을 하면 MN은 PMIPv6의 홈 주소를 변경해야 한다. 이 때 호스트 기반의 시그널링(host-based signaling)이 활성화되고, 따라서 PMIPv6의 네트워크 기반 이동성 관리가 유지될 수 없다. 또한 MN가 글로벌 이동을 지원하지 않는 경우에는 CN(Correspondent Node)와 통신 세션을 유지할 수 없다. 본 논문에서는 PMIPv6에서 글로벌 이동(Global Mobility)을 지원하는 방안을 제안하였으며, 이동 프로토콜 스택(mobility protocol stack)을 갖지 않는 MN가 다른 도메인으로 이동을 해도 통신 세션을 유지할 수 있다. 따라서 본 논문에서 제안한 방법은 글로벌 이동을 지원하면서 동시에 PMIPv6의 장점을 유지할 수 있다. 또한 제안된 방법과 PMIPv6의 성능을 비교함으로써 제안된 방법의 성능이 향상되었음을 알 수 있었다.

Keywords

References

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