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A Transport Layer Mobility Support Approach for Multimedia Streaming Services

멀티미디어 스트리밍 서비스를 지원하기 위한 트랜스포트 계층에서의 이동성 지원 방안

  • 장문정 (이화여자대학교 컴퓨터학과) ;
  • 이미정 (이화여자대학교 컴퓨터학과)
  • Published : 2005.10.01

Abstract

In this paper, we propose a transport layer mobility support protocol for multimedia streaming services in mobile/wireless environments by extending PR-SCTP to support mobility. We named the proposed scheme to be uPR-mSCTP. The rules related to provide unordered and unreliable data transfer, as well as an approach to minimize handover latency we proposed. Through the simulation results, it is shown that, since uPR-mSCTP reduces transmission rates during handover, not only it reduces the waste of network resources, but it also has the packet loss rate similar to FMIPv6, which is a lot smaller than UDP over MIPv6 or HMIPv6 It also incurs smaller control packet overhead compared to the network layer mobility support approaches.

PR-SCTP를 이동환경 지원이 가능하도록 확장함으로써 이동 환경에서 멀티미디어 스트림 전송을 요구하는 응용을 지원하는 트랜스포트 계층 이동성 지원 프로토콜인 uPR-mSCTP를 제안하였다. uPR-mSCTP에서는 비순서화 비신뢰성 데이터 전송 서비스를 지원하기 위한 규칙을 정의하였고, 핸드오버 시 핸드오버 지연을 최소화할 수 있는 방안을 제안하였다. 시뮬레이션을 통해 IPv6에 uPR-mSCTP를 탑재한 경우와 UDP를 탑재한 네트워크 계층 이동성 지원 프로토콜들의 성능을 비교한 결과, uPR-mSCTP는 핸드오버 시 패킷전송률을 줄이기 때문에 네트워크 자원낭비를 줄이고, FMIPv6에 근접하는 패킷손실률을 보이며, MIPv6 HMIPv6에 비해서는 훨씬 낮은 패킷 손실률을 보임을 알 수 있었다. 또한 uPR-mSCTP는 UDP를 탑재한 네트워크 계층 이동성 지원에 비해 제어패킷 오버헤드를 줄이는 장점을 가진다.

Keywords

References

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