MADM-based network selection in heterogeneous wireless networks: A simulation study

Recently, network selection in heterogeneous wireless networks has been widely studied by using various mathematical models, in which MADM is one of the most popular. However, the usage of this model still has lots of existing issues in many scenarios, and there is lack of study on how to solve these issues in the scope of MADM-based network selection. Based on our previous survey, we firstly provide in this paper extensive simulations to demonstrate MADM's feasibility in various scenarios. Meanwhile, we identify several important issues that have not been well solved in the current literature, such as the requirement of efficient weighting method, the usage of VHO properties, the tradeoff for handing-over to the new best network, and the immoderate load balancing compromising importance of other criteria. Combining with our studies on these issues, we finally propose a four-step integrated strategy for MADM-based network selection.

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