| An Efficient Handoff Decision Algorithm for Vertical Handoff Between WWAN and WLAN |
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| 作者姓名： | Min Liu Zhong-Cheng Li and Xiao-Bing Guo |
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| 作者单位： | [1]Institute of Computing Technology, Chinese Academy of Sciences, Beijing 100080, China [2]Lenovo Corporate Research, Beijing 100085, China [3]Graduate University of the Chinese Academy of Sciences, Beijing 100039, China |
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| 基金项目： | 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）. The authors are grateful to Li-Ming Chen for providing us with their simulation parameters in . |
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| 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.
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| 关 键 词： | 计算机 决策 无线网络 第三代移动通信 |
| 收稿时间： | 4 January 2006 |
| 修稿时间： | 2006-01-042006-09-28 |
An Efficient Handoff Decision Algorithm for Vertical Handoff Between WWAN and WLAN |
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| Min Liu,Zhong-Cheng Li,and Xiao-Bing Guo.An Efficient Handoff Decision Algorithm for Vertical Handoff Between WWAN and WLAN[J].Journal of Computer Science and Technology,2007,22(1):114-120. |
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| Authors: | Min Liu Zhong-Cheng Li Xiao-Bing Guo |
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| Affiliation: | 1.Institute of Computing Technology, Chinese Academy of Sciences, Beijing 100080, China; 2.Lenovo Corporate Research, Beijing 100085, China;3. Graduate University of the Chinese Academy of Sciences, Beijing 100039, China |
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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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| Keywords: | heterogeneous wireless network vertical handoff horizontal handoff |
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