An Efficient Multicast Architecture for IP-Based Mobile Core Networks

IP기반 모바일 코어 네트워크에서의 효율적인 멀티캐스트 아키텍처

  • Kim Won-Tea (Embedded Software Research Division, ETRI) ;
  • Kim Hyo-Eun (Dept. of Electronics and Communication, Hanyang univ.) ;
  • Park Yong-Jin (Dept. of Electronics and Communication, Hanyang univ.)
  • 김원태 (한국전자통신연구원 임베디드SW연구단 무선인터넷플랫폼팀) ;
  • 김효은 (한양대학교 전자통신컴퓨터공학부) ;
  • 박용진 (한양대학교 전자통신컴퓨터공학부)
  • Published : 2006.06.01

Abstract

When the legacy multicast routing protocols are adopted in If-based mobile core networks, there are some problems such as traffic injection from unnecessary sources, traffic overhead by group management and router performance degradation by large amount of multicast session information. In this paper, we propose a stateless multicast mechanism which has no need to maintain multicast information for session status and reduces redundant network overhead for maintaining multicast tree. In addition interworking with IGMPv3 gets rid of traffic from unnecessary sources which have no registration from receivers. The operations of essential components including a gateway node for interworking with the legacy Internet multicast network, a gateway node for transparency to radio access network and a intermediate node in mobile core networks, are definitely defined and the proposed communication architecture is completed. Finally we evaluate and approve the performance of the proposed architecture by means of well-designed network simulation.

기존 멀티캐스트 라우팅 프로토콜들을 IP기반 모바일 코어 네트워크에서 도입하였을 때, 불필요한 소스들로부터의 트래픽 유입과 그룹 제어 메시지 오버헤드 및 대용량의 멀티캐스트 세션 정보로 인한 라우터 효율 저하 둥의 문제점들이 있다. 본 논문에서 제안하는 방식은 무상태 멀티캐스트 방식을 기반으로 하기 때문에 각 멀티캐스트 라우터에는 특별히 멀티캐스트 세션을 위한 상태정보를 유지할 필요가 없으며, 멀티캐스트 트리의 상태유지를 위한 불필요한 네트워크 오버헤드를 감소시킬 수 있다. 더불어, TGMPv3와 연동함으로써 수신자들이 가입하지 않은 불필요한 멀티캐스트 소스 트래픽을 제거한다. 기존 인터넷 멀티캐스트 망과의 연동 게이트웨이 노드, 무선망과의 투명성을 위한 게이트웨이 노드 및 모바일 코어 네트워크의 중간 노드 등의 주요 구성 요소 등에 대한 동작을 정의하여 제안하는 통신 아키텍쳐를 완성한다. 마지막으로 본 논문에서 제안하는 아키텍쳐의 우수성을 네트워크 모의실험을 통해 검증한다.

Keywords

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