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Unlike in existing mobile networks, a variety of services having different quality requirements will be provided in future mobile networks, where any single group of service users can not characterize the whole traffic distribution in the system. Beginning at the mobile network design, the population of service subscribers is estimated and then base stations are located. As the service market evolves, the volume of users might grow or the population of users distributed between the multiple services as well as the located cells might change. In this case, two questions in the downlink are of interest: how much growth in user population and what change in user distribution can be accommodated in the current cell configuration. If such shifts could not be admitted, current frequency and base station allocations should be expanded or reallocated. In this paper, we provide a framework that can decide whether the present network configuration is able to admit the changes of interest. Admissibility derision rules are addressed with proofs.