정보처리학회논문지B (The KIPS Transactions:PartB)

한국정보처리학회 (Korea Information Processing Society)
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Head-End-Network에서 대화형 서비스를 위한 멀티캐스트 VOD 시스템

Multicast VOD System for Interactive Services in the Head-End-Network

  • 김백현 (인천대학교 대학원 정보통신공학과) ;
  • 황태준 (인천대학교 대학원 정보통신공학) ;
  • 김익수 (인천대학교 정보통신공학과)
  • 발행 : 2004.06.01
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초록

본 논문은 멀티캐스트 전송 네트워크 상에서 Head-End-Network(HNET) 및 BISM(Buffering algorithm for Interactive Services in Multicast)을 사용하여 VCR 서비스를 제공하는 대화형 VOD 시스템을 제안한다. HNET은 Switching Agent(SA)와 캐쉬를 적용한 Head-End-Nodes(HENs) 및 클라이언트로 구성되며, HENs는 SA의 제어하에 요청된 비디오 스트림을 분산저장하며, 클라이언트 버퍼는 다양한 VCR 재생률을 지원하기 위하여 BISM을 사용하여 동적으로 확장된다. 본 논문에서 대화형 VCR 서비스는 서버 또는 HENs에 의해 네트워크 상에 전송되는 비디오 스트림과 클라이언트 버퍼에 저장된 데이터만을 사용하여 제공된다. 그러므로 제안된 기술은 네트워크의 부하를 감소시킬 수 있으며, 서버로부터 불필요한 채널의 할당 및 중복된 비디오 컨텐츠의 전송을 제한하게 되어 시스템 성능을 향상시킬 수 있는 방법을 제시한다.

This paper proposes an interactive VOD system to serve truly interactive VCR services using multicast delivery, client buffer and web-caching technique which implements the distributed proxy in Head-End- Network(HNET). This technique adopts some caches in the HNET that consists of a Switching Agent(SA), some Head-End-Nodes(HEN) and many clients. In this model, HENs distributively store the requested video under the control of SA. Also, client buffer dynamically expands to support various VCR playback rate. Thus, interactive services are offered with transmitting video streams from network, HENs and stored streams on buffer. Therefore this technique makes the load of network occur In the limited area, minimizes the additional channel allocation from server and restricts the transmission of duplicated video contents

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참고문헌

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