Patent ID: 8938211
Filing Date: 2015-01-20
Classification: G01S,H04W

Abstract:
1. A method for determining a location of a mobile device based upon weighted Received Signal Strength Indication (RSSI) and Round-Trip Time (RTT) data, the method comprising: determining an area in which the mobile device is located; determining a condition of an environment of the mobile device based on location data associated with the area, wherein the location data includes obstruction information; determining a number of obstructions between the area and a wireless access point based on the obstruction information; weighting, with a processing unit, RSSI and RTT data based on the obstruction information, wherein an emphasis placed on the RTT data and the RSSI data is based on the number of obstructions, wherein the RTT data is emphasized if the number of obstructions is zero, the RTT data and the RSSI data have an equal emphasis if the number of obstruction is one, and the RSSI data is emphasized if the number of obstructions is two or more; and calculating the location of the mobile device based on the RSSI and RTT data with the determined weighting.