The KIPS Transactions:PartA (정보처리학회논문지A)

Korea Information Processing Society (한국정보처리학회)
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Performance Analysis of Service Model between server and client on PMSS System

PMSS 시스템에서 서버/클라이언트 간 서비스 모델의 성능분석

  • Published : 2004.06.01
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Abstract

This paper provides the higher user QoS(Quality of Service) by analyzing media service model between server and client in single VoD(Video on Demand) environment and applying it to parallel VoD environment. Media service model is divided into the Client Pull, Server Push, and IPP(Interleaving Pull & Push) model. A server sends data based on client's request in the Client Pull Model. A server one-sidedly sends data without client's request in the Server Pull model. And the WP model unites above two models. For a parallel VoD environment, We built the PMSS system which provides the parallel media streaming services that one client is simultaneously served by several servers. In the single and parallel VoD environment, We compare and analyze the performance of service models with respect to network delay and data size in buffer. In this experiment, we found that IPP service model keeps the least network delay and stable client buffer in the parallel VoD environment. This result shows that PMSS can provide the more quality of service.

본 논문은 단일 주문형 비디오 환경에서의 서버/클라이언트 미디어 서비스 모델을 분석하고 이를 병렬 주문형 비디오 환경에 적용함으로써 보다 나른 사용자 QoS(Quality of Service)를 제공하고자 한다. 미디어 서비스 모델로는 클라이언트가 데이터를 요청하고 서버가 전달해주는 Client Pull 모델과 서버 측에서 일방적으로 데이터를 전달해 주는 Server Push 모델 그리고 두 모델을 통합한 IPP(Interleaving Pull & Push) 서비스 모델로 크게 나뉜다. 병렬 주문형 비디오 환경을 위해 병렬형 미디어 스트리밍 서비스, 즉 단일 클라이언트를 위해 다수의 서버들이 동시에 서버에 참여하는 PMSS(Parallel Media Streaming Service) 시스템을 구축하였으며, 단일/병렬 주문형 비디오 환경에서 네트워크상 전달지연과 클라이언트 버퍼 내 데이터 잔여량 인자를 통하여 각 서비스 모델간 성능을 비교 분석하였다. 실험을 통해 병렬 주문형 비디오 환경에서 IPP 서비스 모델이 가장 적은 전달지연과 안정적인 클라이언트 버퍼를 유지함을 알 수 있었다. 이를 통해 사용자에게 보다 나은 서비스를 제공할 수 있음을 확인하였다

Keywords

References

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