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Design and Performance Evaluation of Resequencing Algorithm for TCP Performance Enhancement in FHMIPV6 Handover  

Hwang An-Kyu (Department of Information and Communications Engineering, Chungnam National University)
Lee Jae-Yong (Electronics, Radio, Information communications Engineering, Chungnam National University)
Kim Byung-Chul (Electronics, Radio, Information communications Engineering, Chungnam National University)
Lee Jae-Hoon (Department of Information and Communications Engineering, Dongguk University)
Publication Information
Journal of the Institute of Electronics Engineers of Korea TC / v.43, no.3, 2006 , pp. 118-125 More about this Journal
Abstract
Mobile nodes in FHMIPv6 has both advantages of HMIPv6 protocol which reduces signaling delay time and resource consumption during a handover and fast handover algorithm which reduces packet loss. Fast handover algorithm can reduce packet loss by 'tunneling' method ; that transmits a packet from old access router to new access router in case of handover. However, the fast handover algorithm can cause a reordering problem in a receiver between packets tunneled from the previous access router and packets transmitted directly to the new access router, which could degrade the TCP performance due to congestion control. In this paper, we propose two algorithms to solve the reordering problem in fast handover. The first one uses a holding timer for tunneling, the other adds a new algorithm to routers that adopt snoop protocol. We compare the performance of the proposed reseuquencing algorithms with that of the existing FHMIPv6 protocol by simulation. The simulation results show that the proposed algorithms solve the reordering problems and enhance TCP performance by preventing TCP sender entering congestion control.
Keywords
Mobile IPv6; Fast handover; resequencing algorithm; TCP performance;
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  • Reference
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