Patent ID: 7894412
Filing Date: 2011-02-22
Classification: G01S,H04W

Abstract:
1. An apparatus, comprising: a communication interface configured to acquire received signal strength indicator (RSSI) data for a wireless device from a plurality of access points on a plurality of floors; and floor determination logic in data communication with the communication interface, the floor determination logic is configured to determine a floor that the wireless device is located on by analyzing the RSSI data acquired by the communication interface; wherein the floor determination logic is configured to calculate an adjusted RSSI from the acquired RSSI data for the wireless device received by every access point by one of a group consisting of adding and subtracting a predetermined value from the RSSI data acquired from each access point; wherein the floor determination logic is configured to sum the adjusted RSSI for each floor; and wherein the floor determination logic is configured to select the floor with the highest sum.