Method and apparatus for locating position of a mobile receiver

DETAILED DESCRIPTION A method and apparatus for locating position of a mobile receiver is described.
In one embodiment, sets of satellite measurements are determined with respect to a plurality of satellites over a period of time.
For example, the mobile receiver may measure pseudoranges to the satellites or may make Doppler measurements with respect to signals transmitted by the satellites, or both.
A determination is made as to whether the mobile receiver is in a stationary condition over the period of time.
For example, the mobile receiver may monitor information received from a wireless communication network over the period of time, such as timing advance data.
The change in timing advance data over the period of time may be compared to a threshold to determine whether the mobile receiver is in the stationary condition.
In another example, the mobile receiver may monitor information received from a motion measurement or motion detection device disposed therein.
The change in the information with respect to a given metric associated with the motion measurement or motion detection device may be compared to a threshold to determine whether the mobile receiver is in the stationary condition.
A position of the mobile receiver is then computed using the sets of satellite measurements in response to detection of the stationary condition.
In one embodiment, the sets of satellite measurements are processed using a navigation model, the results of which are statistically processed to locate position of the mobile receiver.
In another embodiment, the sets of satellite measurements are applied to a sequential estimation filter and position of the mobile receiver is derived therefrom.