Method for location estimation of a mobile device

摘要

A method for providing an indoor location of a mobile device, the mobile device having satellite navigation capabilities so that it is capable of reporting GNSS location information, the method comprising:
- upon detecting that the mobile device has stopped reporting its GNSS location information determining:
i) whether a signal level value obtained from the signal levels reported by the mobile device from the serving cell and neighbouring cells has decreased more than a predefined amount of decibels during a first time window since the last GNNS location information was reported; and,
ii) whether the last reported GNSS location information was less than a predefined distance from a building; and
- using the position coordinates of such building as the location of the mobile device when both conditions i) and ii) are met. The invention also refers to a method for providing an altitude estimation of a mobile device within a building, which comprises determining a variation in the altitude of the mobile device within the building upon detecting that one or more of a set of RF parameters reported by the mobile device has changed during a specified time window.