The Journal of the Institute of Internet, Broadcasting and Communication (한국인터넷방송통신학회논문지)

The Institute of Internet, Broadcasting and Communication (한국인터넷방송통신학회)
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Simulation model of a multihomed node with WiMAX and WLAN

WiMAX - WLAN 멀티홈드 노드의 시뮬레이션 모델

  • 장효뢰 (공주대학교 대학원 정보통신공학과) ;
  • 왕야 (공주대학교 대학원 정보통신공학과) ;
  • 기장근 (공주대 전기전자제어공학부) ;
  • 이규대 (공주대학교 정보통신공학부)
  • Received : 2010.05.08
  • Published : 2010.06.30
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Abstract

With the rapid progress of wireless technologies today, mobile terminals with multiple access interfaces are emerging. In recent years, WLAN (Wireless Local Area Networks) has become the premier choice for many homes and enterprises. WiMAX (Worldwide Interoperability for Microwave Access) has also emerged as the wireless standard that aims to deliver data over long distances. Therefore, it is important to explore efficient integration methods for delivering multimedia data between heterogeneous wireless networks. In this paper, we developed the simulation models and environments for the mobile multihomed node that has both WiMAX and WLAN interfaces and can move around in both networks by using mobile IP. In order to verify the developed models, we designed and constructed several simulation scenarios, e.g. movement in WiMAX/WLAN, group mobility, MANET, and nested MIP under the various traffic environments such as oneway or bothway UDP packets, FTP traffic, and voice with SIP protocol. The simulation results show that the developed models are useful for mobility studies in various integrated wireless networks.

오늘날 무선 기술의 급속한 발전으로 인해 복수개의 액세스 인터페이스를 갖는 이동단말들이 나타나고 있다. 최근 WLAN이 근거리 통신을 위해 많은 가정과 기업에서 사용되고 있으며, WiMAX 또한 장거리 데이터 전달을 위한 무선 표준으로 부각되고 있다. 따라서 이기종 무선망간에 멀티미디어 데이터를 전달하기 위한 효율적인 접속 방안 연구가 필요하다. 본 논문에서는 WiMAX와 WLAN 인터페이스를 갖고 모바일 IP를 이용해 두 망사이를 이동할 수 있는 멀티홈드 노드의 시뮬레이션 모델과 환경을 개발하였다. 개발된 모델을 검증하기 위해 단방향/양방향 UDP 패킷, FTP 트래픽, SIP 프로토콜을 이용한 음성 전송 등과 같은 다양한 트래픽 환경하에서 여러가지 시뮬레이션 시나리오 즉, WiMAX와 WLAN 망간 이동, 그룹 이동성, MANET, 중첩 모바일 IP 등을 설계하고 구성하였으며, 시뮬레이션 결과를 분석함으로써 개발된 모델이 다양한 무선망 접속 시나리오에서의 이동성 연구에 효율적임을 보였다.

Keywords

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