A system and method provide aiding information to a wireless device. The wireless
device extracts a snippet of a received reference signal, generates a timestamp
representing the time of reception thereof, and transmits the snippet and timestamp
to a position determination entity (PDE). The PDE receives and stores a reference
signal along with its reception time, and receive the snippet and timestamp from
the wireless device. The PDE matches the snippet to a portion of the stored reference
signal, and determines a time offset between the timestamp and the time of reception
of the matched portion of the stored reference signal, The PDE then prepares the
aiding information, synchronizes it to the wireless device using the time offset,
and transmits the synchronized aiding information to the wireless device.
