无线异构网络中垂直切换机制与切换算法的研究
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摘要
垂直切换是无线异构网络融合的关键技术,垂直切换的性能会直接影响网络的无缝覆盖程度及用户Qo S的保证和跨越异构网络在动态中会话的连续性。本文在已有的垂直切换机制的基础上,考虑了不同网络参数对垂直切换机制性能的影响,设计出了低能耗的可用网络发现机制。同时,运用层次分析法建立了WLAN和UMTS的递阶层次结构,利用灰色关联分析法对判决函数进行了判决,通过计算出的判决函数值,确定切换的目标网络。最后,通过设定的网络参数对研究的垂直切换机制的性能进行了仿真和分析,仿真结果验证了该机制能够降低垂直切换的频率,而且能够确保垂直切换过程中用户服务质量的稳定性。
Vertical handoff is the key technology of wireless heterogeneous network convergence,vertical handoff performance will directly affect the network seamless coverage degree and the user's Qo S guarantee and moves across heterogeneous network session continuity.In this paper,on the basis of the existing vertical handoff mechanism,considering the different network parameters affect the performance of vertical handoff mechanism,designed the low energy consumption of available network discovery mechanism.At the same time,by using the AHP of UMTS and WLAN class structure,sentence is studied by using GRA to the decision function,through the decision function value calculated,determine handoff target network.Finally,performance by setting network parameters to study the vertical handoff mechanism are simulated and analyzed,the simulation scene is the fusion of WLAN and UMTS,the simulation results show that the mechanism can reduce the number of vertical handoff,stability and can guarantee the user during vertical handoff service quality.
Vertical handoff is the key technology of wireless heterogeneous network convergence,vertical handoff performance will directly affect the network seamless coverage degree and the user's Qo S guarantee and moves across heterogeneous network session continuity.In this paper,on the basis of the existing vertical handoff mechanism,considering the different network parameters affect the performance of vertical handoff mechanism,designed the low energy consumption of available network discovery mechanism.At the same time,by using the AHP of UMTS and WLAN class structure,sentence is studied by using GRA to the decision function,through the decision function value calculated,determine handoff target network.Finally,performance by setting network parameters to study the vertical handoff mechanism are simulated and analyzed,the simulation scene is the fusion of WLAN and UMTS,the simulation results show that the mechanism can reduce the number of vertical handoff,stability and can guarantee the user during vertical handoff service quality.
引文
[1]王煜炜,刘敏,房秉毅.异构无线网络垂直切换技术综述[J].通信学报,2015,36(Z1):224-234.
[2]Chang B J,Chen J F.Cross-layer-based adaptive vertical handoff with predictive RSS in heterogeneous wireless networks[J].IEEE Transactions on Vehicular Technology,2008,57(6):3679-3692.
[3]桃洋,彭蓉,黄宏程.基于运动趋势的模糊逻辑垂直切换算法[J].电视技术,2012,36(3):95-98.
[4]刘胜美,孟庆民,潘甦等.异构无线网络中基于SINR和层次分析法的SAW垂直切换算法研究[J].电子与信息学报,2011,33(1):235-239.
[5]Singh N P,Singh B.Vertical handoff decision in 4G wireless networks using multi attribute decision making approach[J].Wireless Networks,2014,20(5):1203-1211.
[6]陈珏瑜,蔡家麟.异构网络垂直切换决策算法仿真[J].计算机仿真,2015,32(2):297-301.
[7]张会琪.基于NS3的Wi MAX-Wi Fi异构无线网络仿真系统设计与实现[J].自动化与仪器仪表,2017,(212):92-95.
[8]刘敏,李忠诚,徐刚等.异构无线网络中的垂直切换仿真评价模型及评价指标[J].系统仿真学报,2007,19(2):277-281.
[9]郭强.一种无线异构网无缝切换控制方案及其仿真分析[J].上海交通大学学报,2004,38(12):2026-2029.
[10]张治学,李哲青,王辉.基于模糊多因素综合判决的无线异构网络垂直切换算法[J].湖北工程学院学报,2014,34(3):28-32.
[11]杨剑波.多模智能终端在异构无线网络中的垂直切换技术研究[D].信息工程大学,2013.
[12]陶洋,刘小虎,陶玲.基于Qo S的异构网络垂直切换算法[J].计算机工程,2016,42(12):91-96.
[13]纪晓龙,张静.一种异构无线网络的多属性垂直切换方案[J].上海师范大学学报(自然科学版),2014,43(2):153-158.
[14]陈荣赏,肖蕾.一种异构网络垂直切换动态决策模型研究[J].厦门理工学院学报,2016,24(3):66-71.
[15]董荣胜,孙栋栋,郭云川,等.基于演化博弈论的功率控制和垂直切换研究[J].计算机研究与发展,2014,51(6):185-198.
[2]Chang B J,Chen J F.Cross-layer-based adaptive vertical handoff with predictive RSS in heterogeneous wireless networks[J].IEEE Transactions on Vehicular Technology,2008,57(6):3679-3692.
[3]桃洋,彭蓉,黄宏程.基于运动趋势的模糊逻辑垂直切换算法[J].电视技术,2012,36(3):95-98.
[4]刘胜美,孟庆民,潘甦等.异构无线网络中基于SINR和层次分析法的SAW垂直切换算法研究[J].电子与信息学报,2011,33(1):235-239.
[5]Singh N P,Singh B.Vertical handoff decision in 4G wireless networks using multi attribute decision making approach[J].Wireless Networks,2014,20(5):1203-1211.
[6]陈珏瑜,蔡家麟.异构网络垂直切换决策算法仿真[J].计算机仿真,2015,32(2):297-301.
[7]张会琪.基于NS3的Wi MAX-Wi Fi异构无线网络仿真系统设计与实现[J].自动化与仪器仪表,2017,(212):92-95.
[8]刘敏,李忠诚,徐刚等.异构无线网络中的垂直切换仿真评价模型及评价指标[J].系统仿真学报,2007,19(2):277-281.
[9]郭强.一种无线异构网无缝切换控制方案及其仿真分析[J].上海交通大学学报,2004,38(12):2026-2029.
[10]张治学,李哲青,王辉.基于模糊多因素综合判决的无线异构网络垂直切换算法[J].湖北工程学院学报,2014,34(3):28-32.
[11]杨剑波.多模智能终端在异构无线网络中的垂直切换技术研究[D].信息工程大学,2013.
[12]陶洋,刘小虎,陶玲.基于Qo S的异构网络垂直切换算法[J].计算机工程,2016,42(12):91-96.
[13]纪晓龙,张静.一种异构无线网络的多属性垂直切换方案[J].上海师范大学学报(自然科学版),2014,43(2):153-158.
[14]陈荣赏,肖蕾.一种异构网络垂直切换动态决策模型研究[J].厦门理工学院学报,2016,24(3):66-71.
[15]董荣胜,孙栋栋,郭云川,等.基于演化博弈论的功率控制和垂直切换研究[J].计算机研究与发展,2014,51(6):185-198.