주문형 비디오 시스템을 위한 빠른 동적 방송 기법

A Fast Dynamic Broadcasting Scheme For Video-On-Demand Systems

  • 권혁민 (세명대학교 소프트웨어학과)
  • 발행 : 2005.10.01

초록

주문형 비디오 시스템에서 방송에 기초한 스케줄링 기법은 방대한 규모의 클라이언트에게 인기 비디오를 전파하기 위한 매우 효율적인 기술로 알려져 있다. 방송 스케줄링 기법의 주된 동기는 그들은 확장성이 매우 좋으며 아주 적당한 수준의 대역폭을 요구한다는 것이다. 본 논문은 FDBS로 명명된 새로운 동적 방송 스케줄링 기법을 제안하고 이 기법의 정확성을 증명한다. 그리고 시뮬레이션 방법을 통하여 FDBS의 성능을 평가한다 성능 평가 결과에 의하면 FDBS는 매우 적당한 수준의 대역폭을 요구하면서도 UD, CBHD, 그리고 NPB 기법보다 평균 응답시간에 있어서 더 우수한 성능을 보인다.

In video-on-demand(VOD) systems, a broadcast-based scheduling mechanism is known to be a very efficient technique for disseminating popular videos to very large client populations. The main motivations of broadcasting scheduling mechanisms are that they scale up extremely well and they have very modest bandwidth requirements. This paper proposes a new dynamic broadcasting scheduling mechanism, named FDBS (fast dynamic broadcasting scheme), and proves its correctness. This paper also evaluates the performance of FDBS on the basis of a simulation approach. The simulation results indicate that FDBS shows a superior performance over UD, CBHD, and NPB in terms of the average response time with very reasonable bandwidth requirements.

키워드

참고문헌

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