In a building coverage system, RRUs serve to enhance the capturing area and strength of weak wireless signals. Patterned indoor spaces tend to have more complexities which may block signals or reduce their strength. In this regard, RRUs can be placed in several locations across the building. For example, floor mounted or user dense area mounted RRUs can be deployed in large shopping malls and office blocks. Together with indoor antennas, these units guarantee that users are provided with uninterrupted wireless communication services to reliably make calls, browse the internet, or use location-based services.