异构融合网络中利用模糊层次分析法的网络选择算法  

A Fuzzy AHP Networks Selection Algorithm in the Heterogeneous Networks

作　　者：顾海[1] 徐名海[1,2] 闫焕杰[1] 

机构地区：[1]南京邮电大学通信与信息工程学院,江苏南京210003 [2]南京邮电大学宽带无线通信与传感网技术教育部重点实验室,江苏南京210003

出　　处：《南京邮电大学学报（自然科学版）》2012年第6期50-57,共8页Journal of Nanjing University of Posts and Telecommunications：Natural Science Edition

基　　金：国家自然科学基金(60902015);国家科技重大专项(2011ZX03005-004-03)资助项目

摘　　要：目前2G、3G蜂窝无线网络以及WLAN和WiMax在世界范围内的广泛使用,由于不同网络针对不同场景和不同业务体现出优越性,下一代的无线网络必将是多种无线网络共存的异构网络。异构融合网络中性能迥异的接入网重叠覆盖,终端必然面临着网络选择问题,然而目前诸多算法决策时对各网络参数直接比较导致各接入网利用率不均匀、没有充分利用融合网络的异构特性,因此文中提出了一种利用模糊层次分析法的网络选择算法。首先简要分析比较了异构网络模型和现有网络选择算法,然后给出了模糊层析分析法的网络选择算法以及该算法的运用流程,并通过MATLAB进行了仿真分析,证明该算法负载均衡性比TOPSIS要优越,且有利于用户体验的提高。Along with the wide deployment of 2G,3G cellular networks ,WLAN and WiMax, the next gen- eration wireless networks are envisioned as heterogeneous networks with all sorts of wireless networks co- existing, because each network has its own applications and scenarios. The networks selection will be fur- ther focused in heterogeneous wireless networks with different access networks overlapping. However many existing algorithms for decision-making on the utilization of network parameters mathematically led to une- ven distribution of access networks, don＇ t take full advantage of heterogeneous networks. To solve these problems, A fuzzy analytic hierarchy process networks selection algorithm is proposed in this paper. Firstly the heterogeneous network model, AHP and fuzzy evaluation method are briefly described, then the fuzzy analytic hierarchy process evaluation method is proposed. MATLAB simulations show that FAHP algorithm has a better performance than TOPSIS on load balancing, and helps improve the user experience.

关 键 词：异构融合网络 模糊层次分析法 网络选择算法 

分 类 号：TN915.02[电子电信—通信与信息系统]