基于运动趋势的自适应垂直切换算法及其性能评价

Translated title of the contribution: Movement trend based self-adaptive vertical handoff algorithm and its performance evaluation

Min Liu*, Zhong Cheng Li, Xiao Bing Guo, Kun Zheng

*Corresponding author for this work

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

A combination of diverse but complementary wireless access technologies will improve wireless transmission performance and provide mobile users with ubiquitous connectivity. Vertical handoff is the basic requirement for the integration of heterogeneous wireless networks. During the vertical handoff procedure, handoff decision is a crucial issue for an efficient mobility. In this paper, we obtain the mathematical expressions of handoff conditions in traditional hysteresis based and dwelling-timer based handoff algorithms, and analyze their performance. Based on this, we propose a novel vertical handoff decision algorithm, which adaptively adjusts the handoff condition by analyzing the movement trend of mobile hosts and efficiently improves handoff performance. What's more, the related computing requirement is very simple to be suitable for mobile devices with limited computing capacity. Simulations show that it can achieve a better integrative handoff performance compared with conventional hysteresis based and dwelling-timer based handoff algorithms.

Original languageChinese
Pages (from-to)112-119
Number of pages8
JournalJisuanji Xuebao/Chinese Journal of Computers
Volume31
Issue number1
Publication statusPublished - Jan 2008
Externally publishedYes

Keywords

  • Heterogeneous wireless networks
  • Horizontal handoff
  • Vertical handoff
  • Wireless local area networks
  • Wireless wide area networks

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