A Study of UMTS-WLAN Interworking Architecture for Guaranteeing QoS

QoS 보장을 위한 UMTS와 WLAN의 인터워킹 구조

  • 김효진 (연세대학교 컴퓨터과학과) ;
  • 유수정 (연세대학교 컴퓨터과학과) ;
  • 이정갑 (연세대학교 컴퓨터산업시스템공학과) ;
  • 송주석 (연세대학교 컴퓨터과학과)
  • Published : 2006.10.30


Universal Mobile Telecommunications System (UMTS) and Wireless Local Area Network (WLAN) have been developed independently. Then, many researchers have studied UMTS-WLAN interworking architecture for the efficiency. However, the transmission capacity difference of two networks causes the transmission quality degradation. Therefore, this paper proposes a UMTS-WLAN interworking architecture for Quality of Service (QoS). The proposed architecture is based on tight coupling and dynamically guarantees QoS by the mobility prediction method. The proposed architecture is simulated by ns-2. Performance experimental results show that the proposed architecture reduces the handover dropping probability comparing with the existing method and enhances the amount of receiving packets comparing with the method without guaranteeing QoS.


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