Journal of the Institute of Electronics Engineers of Korea TC (대한전자공학회논문지TC)

The Institute of Electronics and Information Engineers (대한전자공학회)
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A Study of Flow-based QoS Management in Packet Transport Network

패킷 전송망에서의 플로우 기반 QoS 관리 방안 연구

  • Choi, Chang-Ho (Electronics and Telecommunication Research Institute) ;
  • Kim, Whan-Woo (Department of Electronic Engineering, Chungnam National University)
  • Received : 2011.04.26
  • Published : 2011.11.25
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Abstract

As a demand of IP based packet service is increasing, transport network is evolving from circuit based transport technology using TDM to Ethernet based packet transport technology. In this paper we introduce packet transport network based on PBB-TE and MPLS-TP and propose a quality of service(QoS) management scheme to satisfy various user requirements in packet transport network. The proposed flow-based QoS management scheme guarantees that per-flow bandwidth control satisfies the predefined QoS requirement perfectly under bandwidth congestion condition by using perflow and per-PTL tunnel management. In order to evaluate the proposed scheme we defined flow and PTL tunnel per input frame and configured QoS parameters for each flow and PTL tunnel respectively. Simulation was done by using OPNET modeler 16.0 version.

무선 인터넷 사용자의 증가, IPTV 확산, 개인 멀티미디어 플랫폼의 다양화 등으로 IP 기반의 패킷 서비스에 대한 요구가 증가함에 따라 TDM 기술을 사용하는 회선 기반의 전송방식에서 이더넷 기반의 패킷 전송방식으로 기술이 진화하고 있다. 본 논문에서는 PBB-TE 기술 및 MPLS-TP 기술을 적용한 패킷 전송망에 대해 소개하고, 패킷 전송망에서 사용자의 다양한 요구조건에 만족하는 서비스 품질 관리 방안을 제시한다. 제안된 플로우 기반의 QoS 관리 방안에서는 입력 프레임을 플로우 별로 구분하여 PTL 터널에 매핑하고 각 플로우 및 PTL 터널 별 대역관리를 수행함으로써 대역충돌 상황에서도 설정된 서비스 품질을 완벽히 보장해 줄 수 있다. 제안된 방안의 성능분석을 위해 각 입력 프레임 별 플로우 및 PTL 터널을 정의하고 각 플로우 및 PTL 터널 별 QoS 파라메터를 설정하였으며 OPNET modeler를 사용하여 모의시험을 수행 하였다.

Keywords

References

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