On Microcell-Macrocell Handoff Queueing scheme in Heterogeneous Industrial Networks

We consider heterogeneous industrial networks supporting soft handoff where users with different mobility are assigned to different layers. In other words, the microcells of the lower layer, assign a slow user, macrocells of the upper layer, assign the fast user. If it is not possible to obtain immediately a idle channel to handoff request, can reduce the terminates forced probability to provide handoff queue. Therefore, we propose an admission control four approaches by providing a handoff queue macrocells and microcells. In consideration of the system in multidimensional birth-death process, we derive the mathematical model by use of the Gauss-Seidel iterative method and steady-state probability distribution. As a result of the analysis, the provision of handoff queue of macrocells and microcells, improvement of performance is increased.