This paper studies the capability of Long-Term Evolution-Advanced (LTE-A) together with WiFi 802.11ac to accommodate the traffic growths of 80x, 500x and 1000x in a high rise building scenario. It provides a guideline on the configuration of the spectrum and the best deployment options for the evolution of the heterogeneous network in order to enhance the capacity for the coming years. The results indicate that, although the deployment of outdoor cells is very important to increase the capacity of the current networks, the expansion with indoor small cells is essential in order to provide coverage and capacity for the future wireless service consumers, specially those located in the high rise buildings.