Adaptive Selection of MIPv6 and Hierarchical MIPv6 for Minimizing Signaling Cost

시그널링 비용의 최소화를 위한 MIPv6와 계층적 MIPv6의 적응적 선택

  • Published : 2006.01.01

Abstract

Internet engineering task force (IETF) has proposed hierarchical mobile IPv6 (HMIPv6) in order to reduce a frequent location registration of a mobile node in mobile IPv6 (MIPv6). All traffics toward a mobile node must be transmitted through a MAP in HMIPv6. This brings unnecessary packet latency because of the increased processing cost of packet at the MAP. At this point the processing cost of packet at the MAP is influenced by the packet arrival rate for a mobile node and the number of mobile nodes in MAP domain. In this paper, we propose that MIPv6 and HMIPv6 are adaptively selected to minimize signaling coast of network as complementing weak point of MIPv6 and HMIPv6. After suppose that the packet arrival rate for a mobile node is fixed ,with this in mind, we find the optimal number of mobile nodes compared the total cost of HMIPv6 with the total cost of MIPv6. And if Mobile Nodes that the MAP is able to manage is full in MAP domain, a mobile node entering MAP domain is provided connection by MIPv6 instead of HMIPv6. In the conclusion, the proposed method of this paper shows that the weak points of MIPv6 and HMIPv6 are removed by adaptive selecting each other.

이동 IPv6(MIPv6)에서 이동 노드의 잦은 위치등록을 줄이기 위해, IETF는 MAP을 도입한 계층적 이동IPv6(MIPv6)를 제안하였다. 그러나 HMIPv6에서 이동 노드로 향하는 모든 트래픽은 MAP을 통해 전달돼야 하기 때문에 이것은 MAP에서의 패킷처리비용의 증가로 인해 불필요한 패킷지연을 초래한다. 이때, MAP의 패킷처리비용은 MAP 도메인 내의 이동 노드의 수와 패킷 수신율에 영향을 받는다. 본 논문은 MIPv6와 HMIPv6 단점을 상호 보완하여 네트워크의 시그널링 비용을 최소화하기 위해 MIPv6와 HMIPv6를 적응적으로 선택하는 방안을 제안한다. 이를 위해 이동 노드의 패킷 수신율은 일정하다고 가정한 후, MIPv6와 HMIPv6의 총비용을 비교하여 MAP이 관리할 수 있는 최적의 이동 노드의 수를 구한다. 그리고 MAP이 관리할 수 있는 이동 노드가 가득 찬 상태일 경우, MAP 도메인으로 새로 들어온 이동 노드는 HMIPv6가 아닌 MIPv6로 연결성을 제공받는다. 그 결과, 본 논문에서 제안한 방안은 MIPv6와 HMIPv6를 적응적으로 수행함으로서 서로의 단점이 해소됨을 보였다.

Keywords

References

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