Abstract
ABSTRACT The rapid increase of mobile devices such as smart phone and smart pad have raised the needs for seamless multimedia services during moving at anytime and anywhere. Current 4G mobile devices are equipped with both 4G (LTE) and WLAN (WiFi) interfaces, and mobile services operators provide wireless Internet services using 4G network with a wider coverage and WiFi zone. Generally users prefer to use the Internet services through WLAN rather than LTE in the coverage of WLAN. However, since WLAN has a long L2 handover latency, it is difficult to support seamless services during a handover. In this paper, we proposed an efficient handover scheme based on flow mobility for WLANs to support a seamless service during handovers by using the overlaid 4G network with a wider coverage. Also, we showed the outperformance of the proposed scheme on a testbed.Keywords:Wireless LAN, 4G, Proxy Mobile IPv6, Flow Mobility, Seamless Handover 중첩된 4G망을 이용한 플로우 기반의 끊김없는 WLAN 핸드오버 방안 최 재 인 † ㆍ박 인 수 ††
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