Journal of Korea Multimedia Society (한국멀티미디어학회논문지)

Korea Multimedia Society (한국멀티미디어학회)
권호 표지

Logical view based Copy-Ahead technique for P2P IPTV

P2P IPTV 성능향상을 위한 논리 뷰 기반 Copy-Ahead기법

  • 송영호 (충남대학교 컴퓨터공학과) ;
  • 권택근 (충남대학교 전기정보통신공학부)
  • Received : 2009.12.30
  • Accepted : 2010.06.14
  • Published : 2010.07.31
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Abstract

The convergence of the telecommunication industry through the combination of existing network technology and multimedia technology has brought along interactive data services in addition to the traditional broadcast services by providing direct connections between the users and the broadcasters. The interactive data service technology has developed a network which is able to fully support QoS and also a fast enough channel changing technology that is satisfactory to the user, are prerequisites for IPTV success, to provide satisfactory levels of service to exist users. However the current server-client system can't support all increasing needs of users. To overcome these limitations, P2P based IPTV service is currently under researched. Therefore, this thesis proposes a logical view based copy-ahead technique for P2P IPTV to improve the performance of IPTV system.

최근 통신 산업의 융합을 통한 네트워크 미디어의 발달은 지금까지의 방송의 개념을 넘어서 시청자와 방송사를 상호 연결하여 방송서비스와 연계된 양방향 데이터 서비스를 제공하는 방식으로 변화하고 있다. 이는 기존 네트워크 기술과 멀티미디어 기술의 결합을 통해 쉽게 이룩될 수 있으나 현실적으로 IPTV를 실제 구현하고자 할 경우에 인터넷 망의 대역폭과 시스템상의 문제점으로 인하여 사용자에게 만족스러운 수준의 서비스를 제공하는데 많은 어려움을 겪고 있다. 특히, IPTV 서비스의 필수 요소인 QoS/QoE를 지원하는 우수한 네트워크 품질과 사용자가 원하는 채널을 빠르게 전환하는 기술은 IPTV가 성공하기 위한 필수 조건이 되었다. 본 논문은 IP Set-Top이 이더넷 패킷을 하드웨어 디코더로 피드하여 플레이하는데 실제 높지 않은 CPU 사용률을 보이는 것에 착안하여 서버 쪽 로드의 일부를 클라이언트가 캐시하여 정보를 공유하고 채널 체인지 시 교환된 정보를 기반으로 빠르게 채널을 변경할 수 있는 기법을 제안한다.

Keywords

References

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