Enhanced fast handover for mobile IPv6 based on IEEE 802.11 network

Authors:
Seonggeun Ryu;Younghwan Lim;Seongjin Ahn;Youngsong Mun
Affiliations:
School of Computing, Soongsil University, Seoul, Korea;School of Computing, Soongsil University, Seoul, Korea;Department of Computer Education, Sungkyunkwan University, Seoul, Korea;School of Computing, Soongsil University, Seoul, Korea
Venue:
ICCSA'05 Proceedings of the 2005 international conference on Computational Science and its Applications - Volume Part I
Year:
2005

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Fast handovers and context transfers in mobile networks

ACM SIGCOMM Computer Communication Review - Special issue on wireless extensions to the internet

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Abstract

In MIPv6, whenever a mobile node changes its attached point, handover process should be followed to inform its home agent and correspondent of the mobile node's current location. The handover process is decomposed into layer 2 and layer 3 handovers again, and these two handovers are accomplished sequentially, which causes long latency problem. This problem is a critical issue in MIPv6. To make up for this, we propose an enhanced fast handover scheme to reduce the overall latency on handover, revising the fast handover [1]. Especially, several messages in layer 3 are sent in one frame during layer 2 handover. We use cost analysis for the performance evaluation. Compared to MIPv6 handover scheme, the proposed scheme gains 79% improvement while it gains 31% improvement, compared to the fast handover.