异构网络环境下的一种新型接入选择算法
首发时间:2013-01-05
摘要:接入选择是异构网络移动性管理机制的一个核心问题。用户终端为了选择最合适的网络进行接入,就必须考虑备选网络的多种参数。本文提出了异构环境下的一种新型接入选择算法来确保终端达到始终最佳连接,它结合了模糊层次分析法和灰度关联分析法两种多属性决策方法。模糊层次分析法用来计算备选网络的每个参数的权重,灰度关联分析法用来对备选网络进行灰度关联分析,从而决定备选网络的优劣排序。仿真结果表明,跟传统接入选择算法相比,本文提出的算法可以精确的为用户选择最佳的网络进行接入,同时能得到理想的满意度。
关键词: 异构接入网络选择 多属性决策 模糊层次分析法 灰度关联分析法
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A New Access Selection Algorithm in Heterogeneous Network Environment
Abstract:Access selection is a core issue of mobile management in heterogeneous network. In order to select the best network to access, various parameters of the candidate networks should be taken into account. To achieve the goal of Always Best Connected (ABC), a new access selection algorithm is introduced in this paper, which combines two multiple attributes decision methods (MADM): Fuzzy Analytic Hierarchy Process (FAHP) and Gray Relational Analysis (GRA) methods. The FAHP method is used to determine the weight of each parameter of candidate network, while the GRA method is used to sort the candidate networks. The simulation results show that the proposed algorithm can be more accurate to select the best network to access and provide ideal degree of users' satisfaction compared with the traditional network selection algorithms.
Keywords: Heterogeneous access network selection MADM FAHP GRA
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