A joint call admission control-based approach for initial RAT selection in HetNets

This paper proposes an optimal Joint-Call Admission Control (JCAC)-based approach for initial radio access technology (RAT) selection for Heterogeneous Wireless Networks (HetNets) composed of two co-located wireless networks supporting two different service classes. The framework of Semi-Markov Decision Process (SMDP) is used to formulate the problem as a JCAC optimization problem involving the design of a cost function that weights three criteria, namely, the blocking cost, the access price cost, and the energy consumption cost. Simulation results are provided, showing that the proposal network selection technique maximizes the system's capacity while selecting the RAT that consumes less energy.

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