Determining clock models

Abstract

Examples disclosed herein relate to methods and apparatuses for observing signals transmitted by one or more transmitters in an asynchronous communication network and applying a time reference to generate a clock model. In one embodiment, parameters representing the clock model may then be forwarded to other mobile devices to assist in positioning operations.

Description

[0001] Related applications [0002] This is a PCT application claiming priority to U.S. 13 / 418,068, filed March 12, 2012, entitled "Determining Clock Models," which is incorporated by reference in its entirety In this article. technical field [0003] The topics revealed in this article relate to determining and applying fine-grained timing parameters of clock models. Background technique [0004] Wireless location determination systems may be used to determine the location of the device. The device may be a mobile or portable device that operates on battery power. A mobile handset can obtain a position fix by processing signals received from terrestrial transmitters fixed at known locations using any of several techniques, such as, for example, Advanced Forward Triangulation (“AFLT ”) and / or Observed Time Difference of Arrival (“OTDOA”). In these particular techniques, the mobile device receiver distance can be measured based at least in part on pilot signals transmit...

AI Technical Summary

Problems solved by technology

This can lead to inaccurate measurements of distance from terrestrial base stations based on the observed phase of such pilot signals

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