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北京邮电大学 网络与交换技术国家重点实验室,北京 100876
[ "范存群(1986-),男,江苏南通人,北京邮电大学博士生,主要研究方向为物联网安全和车联网技术。" ]
[ "王尚广(1982-),男,河南周口人,博士,主要研究方向为服务计算、车联网技术及网络安全。" ]
[ "孙其博(1975-),男,河南郑州人,博士,北京邮电大学副教授,主要研究方向为服务计算、物联网和网络安全。" ]
[ "邹华(1969-),女,四川成都人,博士,北京邮电大学教授,主要研究方向为智能网络和服务计算。" ]
[ "杨放春(1957-),男,北京人,博士,北京邮电大学教授,主要研究方向为智能网络、服务计算和交换技术。" ]
网络出版日期:2013-11,
纸质出版日期:2013-11-25
移动端阅览
范存群, 王尚广, 孙其博, 等. 基于认知自选择决策树的垂直切换方法研究[J]. 通信学报, 2013,34(11):71-80.
Cun-qun FAN, Shang-guang WANG, Qi-bo SUN, et al. Vertical handoff research based on cognitive self-selection decision tree[J]. Communication journal, 2013, 34(11): 71-80.
范存群, 王尚广, 孙其博, 等. 基于认知自选择决策树的垂直切换方法研究[J]. 通信学报, 2013,34(11):71-80. DOI: 10.3969/j.issn.1000-436x.2013.11.009.
Cun-qun FAN, Shang-guang WANG, Qi-bo SUN, et al. Vertical handoff research based on cognitive self-selection decision tree[J]. Communication journal, 2013, 34(11): 71-80. DOI: 10.3969/j.issn.1000-436x.2013.11.009.
在异构无线网络环境下高速移动的终端用户需要随时随地接入网络,然而,在垂直切换过程中,由于终端用户对网络选择的偏好不同以及切换之后网络连接时间和状态难以得到保障,无法满足用户的切换需求。因此,提出了一种支持终端用户高速移动的基于认知自选择决策树的垂直切换方法。该方法首先根据网络属性和终端运动趋势建立相应的切换概率分布,然后根据用户偏好选择相应的决策树进行决策,最后通过对切换后终端的业务类型和运动状态进行反馈分析,提出了反馈认知决策方法。仿真结果表明,所提的方法不仅能够保证高速移动终端在异构无线网络下的切换质量,而且减少了不必要的切换,保证了网络的及时更新。
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.
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