通信学报Issue(11)：71-80,10.DOI:10.3969/j.issn.1000-436x.2013.11.009
基于认知自选择决策树的垂直切换方法研究
Vertical handoff research based on cognitive self-selection decision tree
摘要
Abstract
In heterogeneous wireless network environments, users need to access to the internet anytime, anywhere, even in a high-speed moving process. However, in the vertical handoff process, the preferences of different user and the unsta-ble network status after handoff cannot meet the switching requirement of users. So, a vertical handoff method based on cognitive self-selection decision tree was proposed. Firstly, according to the signal strength, transmission rate, bit error rate, blocking probability and movement trend, the respective handoff probability distribution of them was established and the decisions through the self-selection decision tree was made. Then, a method of feedback cognitive decision in line with the feedback of services and movements on terminals was proposed. Simulation results show that the proposed me-thod can not only ensure the vertical handoff quality of high-speed moving terminals in heterogeneous wireless networks, but also reduce unnecessary handoff and ensure the network update rate.关键词
异构无线网/垂直切换/决策树/反馈认知Key words
heterogeneous wireless network/vertical handoff/decision tree/feedback cognitive分类
信息技术与安全科学引用本文复制引用
范存群,王尚广,孙其博,邹华,杨放春..基于认知自选择决策树的垂直切换方法研究[J].通信学报,2013,(11):71-80,10.基金项目
国家自然科学基金资助项目(61272521)；教育部博士点基金资助项目(20110005130001)；教育部新世纪优秀人才支持计划基金资助项目(NCET100263)；北京市自然科学基金资助项目(4132048)@@@@The National Natural Science Foundation of China (61272521) （61272521）
Ph.D Programs Foundation of Ministry of Edu-cation (20110005130001) （20110005130001）
The New Century Talent Supporting Project of Education Ministry (NCET100263) （NCET100263）
The Natural Science Foundation of Beijing (4132048) （4132048）
