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

被引：19

作者：

Liu, Min ^{[1
]}

Li, Zhong-Cheng

Guo, Xiao-Bing

机构：

[1] Chinese Acad Sci, Inst Comp Technol, Beijing 100080, Peoples R China

[2] Lenovo Corp Res & Dev, Beijing 100085, Peoples R China

[3] Grad Univ, Chinese Acad Sci, Beijing 100039, Peoples R China

来源：

JOURNAL OF COMPUTER SCIENCE AND TECHNOLOGY | 2007年 / 22卷 / 01期

关键词：

heterogeneous wireless network; vertical handoff; horizontal handoff;

D O I：

10.1007/s11390-007-9016-8

中图分类号：

TP3 [计算技术、计算机技术];

学科分类号：

0812 [计算机科学与技术];

摘要：

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.

引用

页码：114 / 120

页数：7

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