Route Optimization Using a Limited Prefix Delegation Method in Multi-level Nested Mobile Network Environments

다단 중첩된 이동네트워크 환경에서 제한된 프리픽스 위임 방법을 이용한 경로최적화

  • 송정욱 (건국대학교 컴퓨터공학과) ;
  • 한선영 (건국대학교 컴퓨터공학과)
  • Published : 2009.08.15

Abstract

Nowadays, requests of connecting to the Internet while moving are increasing more and more, and various technologies have been developed for satisfying those requests. The IETF nemo WG standardized "Network Mobility Basic Support Protocol" for supporting mobile network through extending existing MIPv6 protocol for supporting host mobility. But, mobile networks can be nested while they are changing their location. And if they are multi -level nested, that causes some problems because of protocol characteristic. In this paper, we try to solve the problem that is complicated routing path caused by multi-level nesting of mobile networks with our limited prefix delegation method. We give a little modification to the standard protocol and add some functions to mobile router. With results from analysis, we could say that our method has better performance than other proposed methods.

현대의 생활에서 이동 중에 인터넷의 사용에 대한 요구는 점점 증대되고 있으며, 이러한 요구에 부응하고자 여러 가지 기술이 개발되고 있다. IETF nemo 워킹 그룹에서는 무선 단말이 이동하는 중에 끊김 없는 네트워크 서비스를 보장해 주기 위해 개발된 MIPv6 프로토콜을 확장하여 네트워크의 이동을 지원할 수 있는 네트워크 이동성 지원 프로토콜로 표준화 하였다. 하지만, 이동네트워크는 다른 이동네트워크와 이동 중에 서로 중첩이 될 가능성이 있으며, 이동네트워크의 다단 중첩 현상은 표준 프로토콜의 특성 때문에 여러 가지 심각한 문제를 발생 시키게 된다. 본 논문에서는 이동네트워크의 다단 중첩 현상으로 인한 문제점 중에서 데이터의 전달 경로가 복잡해지는 문제를 해결하고자 제한된 프리픽스 위임 방법을 이용한 경로 최적화 방법을 제시한다. 표준 프로토콜의 일부를 수정하여 이동 라우터에 새로운 기능을 추가 하였으며, 기존에 제안된 다른 기법들과 비교 분석을 통하여 가장 나은 성능을 가지고 있음을 확인하였다.

Keywords

References

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