Terrestrial positioning system calibration

摘要

Embodiments disclosed aggregate a plurality of crowdsourced measurement sets for antennas received from a plurality of Mobile Stations (MS) with a Base Station Almanac (BSA), based on a measurement location estimate and a measurement location uncertainty estimate associated with each measurement set. A map comprising a plurality of map layers may be obtained, where each map layer associates locations in the BSA with spatially variable Forward Link Calibration (FLC) values for the antenna derived from the updated BSA data, wherein each spatially variable FLC value is associated with a corresponding location in the updated BSA data. Map layers, which may also include multipath map and/or received signal strength layers, may be provided to MS′ as location assistance data.

主权项

1. A method on a Mobile Station (MS) comprising:
obtaining location assistance data comprising a map with a first plurality of map layers, wherein each map layer in the first plurality of map layers associates location entries in a Base Station Almanac (BSA) with spatially variable Forward Link Calibration (FLC) values for an antenna; performing, based on the location assistance data, measurements to obtain a measurement set comprising signal measurements for the antenna, wherein a calibration comprising at least one spatially variable FLC value in the location assistance data is applied to at least one measurement in the measurement set; and sending the measurement set to a BSA server.