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Title of Journal: J ElectronChina

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Abbravation: Journal of Electronics (China)

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Springer Berlin Heidelberg

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10.1007/bf00151931

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1993-0615

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Vertical handoff algorithm in heterogeneous networ

Authors: Shengdong Xie Meng Wu
Publish Date: 2009/01/01
Volume: 26, Issue: 1, Pages: 71-79
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Abstract

A vertical handoff decision algorithm in heterogeneous networks composed of CDMA Cell Networks CN and Wireless Local Area Network WLAN is proposed to minimize the total interference in CDMA The scope of WLAN is determined by minimizing interference and each communicating node shall handoff to WLAN as soon as it enters the scope We first propose a model for heterogeneous networks and based on it we obtain the closeform expression of interference In order to minimize interference we use simulation annealing method to get the WLAN radius which is called basic algorithm In order to reduce the interference further we improve the basic and get the enhanced algorithm Through numerical computing we analyze the interference in condition of different call arrive rates and results show that the enhanced can reduce interference more greatly than the basic

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