An efficient handoff decision algorithm for vertical handoff between WWAN and WLAN

Min Liu*, Zhong Cheng Li, Xiao Bing Guo

*Corresponding author for this work

Research output: Contribution to journalArticle

10 Citations (Scopus)

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.

Original languageEnglish
Pages (from-to)114-120
Number of pages7
JournalJournal of Computer Science and Technology
Volume22
Issue number1
DOIs
Publication statusPublished - Jan 2007
Externally publishedYes

Keywords

  • Heterogeneous wireless network
  • Horizontal handoff
  • Vertical handoff

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