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CR-SeMMS: Cost-Reduced Secure Mobility Management Scheme Based on SIP in NEMO Environments

CR-SeMMS : NEMO환경에서 SIP에 기반한 비용절감의 안전한 이동성관리 기법

  • 조철희 (성균관대학교 정보통신대학원 정보보호학과) ;
  • 정종필 (성균관대학교 정보통신공학부)
  • Received : 2012.01.03
  • Accepted : 2012.06.08
  • Published : 2012.06.30

Abstract

The mobile Virtual Private Network (MVPN) of Internet Engineering Task Force (IETF) is not designed to support NEwork MObility (NEMO) and is not suitable for real-time applications. Therefore, an architecture and protocol which supports VPN in NEMO are needed. In this paper, we proposed the cost-reduced secure mobility management scheme (CR-SeMMS) which is designed for real-time applications in conjunction with VPN and also which is based on the session initiation protocol (SIP). Our scheme is to support MVPN in NEMO, so that the session is well maintained while the entire network is moved. Further, in order to reduce the authentication delay time which considers as a delaying factor in hands-off operations, the signaling time which occurs to maintain the session is shortened through proposing the hands-off scheme adopting an authentication method based on HMAC based One Time Password (HOTP). Finally, our simulation results show the improvement of the average hands-off performance time between our proposed scheme and the existing schemes.

IETF(Internet Engineering Task Force)의 MVPN(Mobile Virtual Private Network) 은 NEMO(NEtwork MObility)를 지원하도록 설계되어 있지 않기 때문에 실시간 응용에 적합하지 않다. 따라서 안전한 NEMO에서 VPN을 지원하는 아키텍처와 프로토콜이 필요하다. 본 논문에서는 VPN 환경에서 실시간 응용을 위해 설계된, SIP(Session Initiation Protocol)에 기반한 CR-SeMMS(Cost-Reduced Secure Mobility Management Scheme) 시스템을 제안한다. 제안하는 기법은 NEMO에서의 MVPN을 지원하는 방법을 제안하여 전체 네트워크가 이동하는 경우, 지속적으로 세션을 유지하도록 한다. 또한, 핸드오프의 경우 지연 시간 요소로 고려되는 인증 시간을 단축하기 위하여 HOTP(HMAC based One Time Password) 기반의 인증방식을 이용한 핸드오프 방식을 제안하여 세션을 유지하기 위해 지속적으로 발생하는 시그널링 처리시간을 개선하였다. 마지막으로, 제안한 방식과 기존 방식을 시뮬레이션하여 핸드오프 수행의 평균 시간이 개선되는 것을 확인한다.

Keywords

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