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Slective Buffering Macro Handover Which Applies The F-SNOOP in Hierarchical structure  

Ahn Chi-Hyun (경희대학교 전자공학과)
Kim Dong-Hyun (경희대학교 전자공학과)
Kim Hyoung-Chul (열린사이버대학교 정보통신학과)
Ryou Hwang-Bin (광운대학교 컴퓨터공학부)
Lee Dae-Young (경희대학교 전자공학과)
Jun Kye-Suk (경희대학교 전자공학과)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.31, no.5B, 2006 , pp. 413-420 More about this Journal
Abstract
HMIPv6 is designed to reduce the signaling load to external network and improve handover speed of MN by including Mobility Anchor Point(MAP) in local handover. However in this case of macro handover, it's just used pervious MIPv6 handover algorithm. So, it occurs packet loss and transmission delay problem. In this paper, we propose the mechanism applying the HMIPv6 for Fast Handover to choose suitable to the condition buffering handover. The condition for the selection is result distance measurement between MN and CN, between MN and NAR. Furthermore, using F-SNOOP protocol, it is possible to improve wireless network performance. Wireless network has high Bit Error Rate(BER) characteristic because of path loss, fading, noise and interference. TCP regards such errors as congestion and starts congestion control. This congestion control makes packet transmission rate low. However, F-SNOOP improves TCP performance based on SNOOP and Freeze TCP that use Zero Window Advertisement(ZWA) message when handoff occurs in wireless network.
Keywords
HMIPv6; wireless TCP; SNOOP; Buffer management;
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