电讯技术Issue(2)：122-127,6.DOI:10.3969/j.issn.1001-893x.2016.02.002
多网络共存下基于贝叶斯的垂直切换算法
A Vertical Handoff Algorithm for Multi-network Coexistence Based on Bayesian Dicision
摘要
Abstract
To solve the problem that current vertical switching technologies generally cannot support vertical handover in multi-network handover,this paper proposes an improved vertical handover algorithm based on Bayesian Decision Theory. First, the handover probability distribution associated with multi-condition is established according to the signal strength of access network,bit error rate( BER) ,blocking rate and actual demand on network from different customer service to calculate a priori handover probability. Then, the posterior probability is calculated on account of the Bayesian Decision Algorithm to perform a dicision com-parison,thereby selecting an optimal access network. Simulation results indicate that the algorithm can not only effectively achieve vertical handover among the different wireless access technologies,avoid needless handover,improve the successful probability of handover, but also reduce the blocking of communication hotspots so as to provide users with better quality services when an average load of each network reaches 30% ~40%.关键词
异构网络/网络协同/网络负载/贝叶斯决策/垂直切换Key words
heterogeneous network/multi-network collaboration/network load/Bayesian decision/vertical handover分类
信息技术与安全科学引用本文复制引用
孔令斌,王军选,孙长印..多网络共存下基于贝叶斯的垂直切换算法[J].电讯技术,2016,(2):122-127,6.基金项目
国家高技术研究发展计划(863计划)项目(2014AA01A703) （863计划）
陕西省自然科学基金资助项目(2014JM8317,2013JK1045) （2014JM8317,2013JK1045）
中兴项目产业资助项目Foundation Item:The National High-tech R&D Program of China(863 Program)(2014AA01A703) （863 Program）
The Natural Science Foundation of Shaanxi Province(2014JM8317,2013JK1045) （2014JM8317,2013JK1045）
The ZTE Forum Foundation of ZTE Corporation （）
