Journal of the Korea Convergence Society (한국융합학회논문지)

Korea Convergence Society (한국융합학회)
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The Reliable Multicast Transport Protocol over Wireless Convergence Networks using a Retransmission Agent

재전송 Agent를 이용한 유무선 융합망에서의 신뢰성 있는 멀티캐스트 전송 방식

  • Youm, Sungkwan (School of Information Technology and Architecture, Cheju Halla University) ;
  • Yu, Sunjin (School of Information Technology and Architecture, Cheju Halla University)
  • 염성관 (제주한라대학교 정보기술건축학부) ;
  • 유선진 (제주한라대학교 정보기술건축학부)
  • Received : 2016.06.28
  • Accepted : 2016.08.02
  • Published : 2016.08.31
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Abstract

When using reliable multicast protocol over air links, the multicast packets lost in the air link cause the initiation of retransmission request packets and the implosion of retransmission packets, which deteriorate multicast session performance. This paper proposes on the efficient reliable multicast mechanism in wireless networks utilizing the Agents. In this paper we show the design of a retransmission agent which improves the performance of reliable multicast sessions in wireless network. The main idea is to cache reliable multicast packets at the base station and perform local retransmissions across the wireless link. MATLAB has been used to simulate and to get performance results for signaling overhead and processing delay through the comparison of the proposed agent model to the Multicast File Transfer Protocol. It has been proven from the simulation results that the proxy module make pass trials shorter in Multicast File Transfer Protocol.

본 논문에서는 무선 기지국에서 멀티캐스트 패킷 재전송을 담당하는 Agent를 설치하여 신뢰성있는 멀티 캐스트 프로토콜인 MFTP에서의 재전송률을 낮추고자 한다. 유무선 통합 환경에서 신뢰성 있는 멀티캐스트 프로토콜 사용 시, 무선 링크의 비트 에러와 단말의 이동성을 보장하기 위한 핸드오프로 오류가 많이 발생한다. 이런 오류때문에 멀티캐스트 그룹에 제어 및 재전송 패킷이 증가하게 되며, 또한 멀티캐스트 그룹 세션 전체 성능이 저하된다. 본 논문은 기지국에 무선 환경에 있는 단말의 복구 요구 패킷에 대한 복구 패킷 전송을 담당하는 Agent을 도입하는 방식을 제안하고 있다. MATLAB를 이용하여 제안한 방법이 멀티캐스트 세션에 복구 요구 및 복구 패킷의 수을 줄일 수 있고 멀티캐스트 그룹 세션 전체의 성능을 향상시킬 수 있음을 검증하였다.

Keywords

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