Abstract: An apparatus configured to acquire received signal strength intensities (RSSIs) for a wireless device from a plurality of access points (APs) located on a plurality logical floors. The apparatus is configured to determine which logical floor the wireless device is on by analyzing the RSSIs. The RSSIs for each floor are adjusted with an adjustment value and are selectively weighted with at least two different weight values, and the adjusted and weighted RSSIs for each floor are each summed. The floor with highest sum of adjusted or weighted RSSIs is determined to be the floor the wireless device is on. The logical floor is further determined by sorting the RSSIs for each floor and then weighting the sorted RSSIs with the different weight values. The sorted and weighted RSSIs for each floor are summed. The floor with highest sum of weighted sorted RSSIs is determined to be the floor the wireless device is on.