Patent ID: 9606215
Date: 2017-03-28
CPC Classifications: G01S,H04W

Claim:
1. A method on a Mobile Station (MS) comprising: obtaining location assistance data comprising a map, the map comprising a plurality of map layers, the plurality of map layers comprising one or more Forward Link Calibration (FLC) map layers, wherein each FLC map layer associates a plurality of entries in a Base Station Almanac (BSA) with corresponding spatially variable Forward Link Calibration (FLC) values for signals transmitted by one or more antennas; performing, based on the location assistance data, measurements to obtain measurement sets comprising signal measurements for a subset of the one or more antennas, wherein each measurement set corresponds to an antenna in the subset of the one or more antennas; determining calibrated measurements by applying, based on the location assistance data, a calibration comprising at least one spatially variable FLC value corresponding to a first position estimate of the MS to each measurement in at least one measurement set; and determining a second position estimate of the MS and a corresponding position uncertainty based, in part, on the calibrated measurements in the at least one measurement set.