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An Efficient Handoff Decision Algorithm for Vertical Handoff Between WWAN and WLAN

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Abstract

Vertical handoff is one significant challenge for mobility management in heterogeneous wireless networks. Compared with horizontal handoff, vertical handoff involves different wireless network technologies varying widely in terms of bandwidth, delay, coverage area, power consumption, etc. In this paper, we analyze the signal strength model of mobile node and present a new vertical handoff decision algorithm. This algorithm can adapt to the change of mobile node’s velocity and improve the handoff efficiency significantly. We analyze the algorithm’s performance and the effect of different parameters on handoff triggering. In addition, we propose three performance evaluation models and verify the algorithm’s feasibility and effectiveness in simulations.

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Authors and Affiliations

  1. Institute of Computing Technology, Chinese Academy of Sciences, Beijing, 100080, China

    Min Liu & Zhong-Cheng Li

  2. Lenovo Corporate Research, Beijing, 100085, China

    Xiao-Bing Guo

  3. Graduate University of the Chinese Academy of Sciences, Beijing, 100039, China

    Min Liu

Authors
  1. Min Liu
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  2. Zhong-Cheng Li
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  3. Xiao-Bing Guo
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Corresponding author

Correspondence to Min Liu.

Additional information

*A preliminary version of this paper appeared in Proc. the 14th IEEE International Conference on Networks. This work is supported by the National Natural Science Foundation of China (Grant No. 90604016).

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Liu, M., Li, ZC. & Guo, XB. An Efficient Handoff Decision Algorithm for Vertical Handoff Between WWAN and WLAN. J Comput Sci Technol 22, 114–120 (2007). https://doi.org/10.1007/s11390-007-9016-8

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  • DOI: https://doi.org/10.1007/s11390-007-9016-8

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