The Journal of Korean Institute of Communications and Information Sciences (한국통신학회논문지)

The Korean Institute of Commucations and Information Sciences (한국통신학회)
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A Study on Dynamic Provisioning Mechanism for QoS guarantee in DiffServ Networks

DiffServ 망에서 QoS 보장을 위한 동적 프로비저닝 메카니즘 연구

  • 이우섭 (한국전자통신연구원 네트워크연구소) ;
  • 이준화 (충남대학교 컴퓨터과학과 컴퓨터네트워크연구실) ;
  • 양미정 (한국전자통신연구원 네트워크연구소) ;
  • 이일우 (한국전자통신연구원 네트워크연구소) ;
  • 유제훈 (한국전자통신연구원 네트워크연구소) ;
  • 김상하 (충남대학교 컴퓨터과학과 컴퓨터네트워크연구실)
  • Published : 2003.02.01
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Abstract

The differentiated service architecture is based on a simple model by applying a per-class service in the core node of the network. However, due to the simplified network behavior, the network structure and provisioning were more complicated. If a service provider wants the dynamic provisioning or better bandwidth guarantee, signaling protocol with QoS parameters or admission control method should be deployed in DiffServ network. However, these methods increase the complexity. Therefore, we proposed DPM2 mechanism for admission control in the DiffServ network. In this paper, we describe and survey the admission control methods that are applicable to IP networks and propose also the dynamic provisioning mechanism based on the bandwidth broker and distributed measurement based admission control and movable boundary bandwidth management to support heterogeneous QoS services in differentiated service networks. For the performance evaluation for proposed mechanism, we used ns-2 simulator.

IP 망에서 차별 서비스 구조는 코아 노드에서 클래스별 서비스 기반의 단순한 모델을 적용한다. 그러나, 이러한 단순 처리로 인하여, 망 구조나 프로비저닝은 더욱 복잡하게 되고 서비스 제공자가 동적 프로비저닝이나 효율적인 대역 보장 방법을 제공하려면 시그널링 프로토콜이나 연결 수락 제어 방법이 제공되어져야 한다. 그러나, 이러한 방법은 망의 복잡성을 증가시키게 됨으로 차별 서비스 망에서 복잡하지 않고 대역을 효율적으로 사용할 수 있는 동적 프로비저닝 기법이 연구되어야 한다. 본 논문에서는 차별 서비스 망에서 다양한 서비스 품질 요구 사항을 만족시킬 수 있는 연결 수락 제어 메커니즘으로 대역폭 브로커와 측정 기반 수락 제어 및 가변 영역 대역 관리 방법을 사용하는 DPM2 (Dynamic Provisioning over MBAC and Movable Boundary) 메커니즘을 제안하였다. 또한, ns-2 시뮬레이터를 이용하여 성능 분석을 하였다.

Keywords

References

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