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Seamless handover management scheme under multi-rate WLANs

Published: 08 November 2010 Publication History

Abstract

In ubiquitous Wireless LANs (WLANs), Mobile Nodes (MNs) are likely to experience many and frequent handovers between WLANs managed by different organizations/ISPs during TCP communication. Although we proposed a WLAN handover management scheme based on the number of frame retransmissions, the proposed scheme cannot adapt to multirate WLAN used in a more realistic environment. Furthermore, the handover is controlled based on only a predetermined threshold of the number of frame retransmissions, thereby degrading the performance drastically when the inappropriate threshold is employed. Therefore, in this paper, to enhance the practicality of handover scheme in a realistic environment where WLAN supports multiple data rates and automatically changes the rate in response to wireless link condition, we propose a handover management scheme adaptable to multi-rate WLANs. Our scheme exploits two sorts of information to recognize the wireless condition appropriately: (1) data rate used most frequently (DRMF) by each interface and (2) frame retransmission ratio (FRR) on each interface for some duration. The former of two criteria first enables us to estimate an area where we should start handover, and if DRMFs of two interfaces are same in the area, the latter then allows us to compare wireless condition on two interfaces precisely, thereby giving an optimal handover point. The simulation results demonstrate the advantages of the proposed method, especially in the multi-rate WLAN environment.

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Cited By

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  • (2019)Performance analysis of vertical handover techniques based on IEEE 802.21: Media independent handover standardTransactions on Emerging Telecommunications Technologies10.1002/ett.3695Online publication date: 29-Jul-2019
  • (2018)An efficient handover decision method based on frame retransmission and data rate for multi-rate WLANsAd Hoc Networks10.1016/j.adhoc.2012.06.00411:1(324-338)Online publication date: 27-Dec-2018
  • (2016)Changeover prediction model for improving handover support in campus area WLANNOMS 2016 - 2016 IEEE/IFIP Network Operations and Management Symposium10.1109/NOMS.2016.7502821(265-272)Online publication date: Apr-2016

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    MoMM '10: Proceedings of the 8th International Conference on Advances in Mobile Computing and Multimedia
    November 2010
    441 pages
    ISBN:9781450304405
    DOI:10.1145/1971519
    Permission to make digital or hard copies of all or part of this work for personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. Copyrights for components of this work owned by others than ACM must be honored. Abstracting with credit is permitted. To copy otherwise, or republish, to post on servers or to redistribute to lists, requires prior specific permission and/or a fee. Request permissions from [email protected]

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    Published: 08 November 2010

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    View all
    • (2019)Performance analysis of vertical handover techniques based on IEEE 802.21: Media independent handover standardTransactions on Emerging Telecommunications Technologies10.1002/ett.3695Online publication date: 29-Jul-2019
    • (2018)An efficient handover decision method based on frame retransmission and data rate for multi-rate WLANsAd Hoc Networks10.1016/j.adhoc.2012.06.00411:1(324-338)Online publication date: 27-Dec-2018
    • (2016)Changeover prediction model for improving handover support in campus area WLANNOMS 2016 - 2016 IEEE/IFIP Network Operations and Management Symposium10.1109/NOMS.2016.7502821(265-272)Online publication date: Apr-2016

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