이동 컴퓨팅 환경에서 사용자의 이동 특성은 실시간 멀티미디어 서비스를 제공하기 위해서 요구되는 QoS에 심각한 영향을 미친다. 기존의 유선환경에서 실시간 서비스를 제공하기 위해서 제안된 RSVP 프로토콜을 이동 사용자의 네트워크 접속점이 수시로 변화하는 이동 컴퓨팅 환경에 적용하기에는 부적합하다. 사용자의 이동이 QoS에 미치는 영향을 최소화하기 위해서 사용자가 이동할 것으로 예상되는 영역에 대한 자원을 미리 예약하는 프로토콜이 MRSVP(Mobile RSVP)이다. 본 논문은 기존의 MRSVP를 확장하여 RSVP Tunnel 및 Mobile IP의 지역 등록(Regional Registration) 프로토콜이 결합된 동적 이중 앵커노드(DDAN : Dynamic Dual Anchor Node) 구조를 제안한다. 이는 기존의 MRSVP 프로토콜에서 미리 예약되는 자원을 지역적으로 제한함으로써 자원예약을 최소화시키는 반면에, 기존의 MRSVP와 유사한 수준의 QoS 보장을 목적으로 한다.
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