关键词: 异构网络, 网络选择, 权重, 层次分析法, 理想值近似性排序法

Abstract: In heterogeneous networks, the result of network selection should come out according to subjective factors and objective factors, i.e. the users preferences and network objective attributes. But in limited scheme multi-objective decision-making of comprehensive evaluation method, Analytic Hierarchy Process (AHP) has the characteristics of strong subjectivity, the characteristics of the Technique for Order Preference by Similarity to Ideal Solution (TOPSIS) is true, intuitive, and reliable. Therefore, concerning the features of the two methods, in the network selection issue, the user preference aspects in the choice of AHP method, network status using TOPSIS method, a kind of user preferences and network status collaborative judgment network selection algorithm was puts forward. The simulation results show that, without considering load conditions, the proposed algorithm can effectively choose the suitable network for mobile terminal current business.

Key words: heterogeneous network, network selection, weight, Analytic Hierarchy Process (AHP), Technique for Order Preference by Similarity to Ideal Solution (TOPSIS)