제 3세대 이동통신 시스템인 UMTS는 인터페이스를 통해 전달되는 IP 패킷을 인터넷 망에 전송하기 위해 GPRS 시스템을 정의하고 있다. GPRS 시스템 중 게이트웨이 기능을 수행하는 GGSN은 이동망과 인터넷 망을 연결시켜주는 역할을 한다. Mobile IP 망에 가입된 가입자 또는 ISP 망에 가입될 가입자 간에 인터넷 서비스를 지속적으로 제공하기 위해 이동통신 망과 인터넷 당에 단일화된 하나의 라우팅 메커니즘이 필요하다. 따라서 본 논문에서는 이들 망 간의 패킷을 효율적으로 라우팅할 수 있는 IP-in-IP 방법을 제안한다. 그리고 제안한 방법에 따라 패킷 전송을 위한 기능, 처리 절차 및 메시지 구조를 설계하고 구현한다. 마지막으로 GGSN과 FA 시스템 간의 패킷 전송률, 그리고 GGSN과 FA/ISP 시스템을 동시에 연결한 상태에서 패킷 전송률을 살펴본다.
KSP Keywords
Mobile IP(MIP)
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