탈중앙 멀티미디어 스트리밍 서비스를 위한 평가 프레임워크의 설계 및 구현
Design and Implementation of the Evaluation Framework for Decentralized Multimedia Streaming Services
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초록
본 논문은 네트워크 품질에 대한 서비스의 품질과 성능을 평가할 수 있는 분산형/탈중앙 스토리지에 오디오와 비디오를 포함하는 멀티미디어 스트리밍 서비스의 프로토타입을 설계하고 구현한 통합된 평가 프레임워크를 제안한다. 본 논문의 평가 프레임워크는 기존 클라이언트·서버 구조의 확장성과 단일 장애 지점의 문제를 극복할 수 있도록 멀티미디어 스트리밍 서비스에 분산형스토리지를 적용하였으며, 서비스 품질을 측정하고 향상 시키는 중요한 지표에 초점을 맞추었다. 특히 탈중앙 스토리지 기반의 멀티미디어 콘텐츠 스트리밍 서비스에서 스트리밍의 품질과 성능을평가하기 위한 성능 지표를 측정할 수 있을 뿐만 아니라 네트워크 가상화 기술을 이용하여 네트워크 품질을 조정할 수 있다. 실험 결과에 따르면 제안된 프레임워크는 단일 호스트 컴퓨터에 탈중앙 스토리지 기반 스트리밍 서비스를 구축하고 운영하는 데 있어 오버헤드가 낮음을 보여주었으며, 평가 가능한 시스템 규모의 확장성을 검증하였다.
Abstract
This paper presents an evaluation framework for prototyping multimedia streaming services including audio and video in a distributed and/or decentralized storage that can evaluate service quality and performance under various network conditions. The evaluation framework focuses on important indicators which measure and improve service quality by applying decentralized storage to multimedia streaming services that can mimic the scalability of the existing server-client software architecture and the issue of a single point of failure. The integrated framework not only measures performance indicators for evaluating the quality and performance of multimedia streaming on open source based multimedia content streaming services, but also adjusts network quality using network virtualization technology for comprehensive evaluations. The experimental results show that the integrated framework has low overhead in building and operating a decentralized storage with multimedia streaming services on a single host computer which validates the scalability of the developed framework.
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