최선형 서비스를 지향하는 인터넷환경에서의 고품질 미디어 스트리밍 서비스는 동적으로 변화하는 네트워크 상황의 극복을 통하여 실현될 수 있다. 본 논문에서는 N-Level 미디어 스트리밍 시스템을 설계 및 구현하고, 변화하는 네트워크 상황의 극복을 위하여 요구대역 고속 측정 기법을 소개한다. 요구대역 허용여부는 단방향 전송지연의 추세를 이용하여 판단하며, QoS 제어는 SVC(Scalable Video Coding)중 시간적 부호화를 도입한다. FTTH(Fiber to the home) 환경에서의 실험은 제안 시스템이 가용 대역폭의 변화에 빠르게 적응하는 과정을 보여주며 서비스 품질 또한 향상시켜줌을 보여준다.
KSP Keywords
Fiber to the Home(FTTH), Scalable Video Coding
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