Google Inc.

Stanley Andrews Chesnutt

Tsuwei Chen

A wireless computing device may scan a frequency set. A first group of base stations may use the frequencies in the frequency set. Based on information relating to one or more base stations in the first group of base stations, the wireless computing device may estimate its location. The wireless computing device may further select a frequency subset of the frequency set. A second group of base stations may use the frequencies of the frequency subset. Based on information relating to one or more base stations in the second group of base stations, the wireless computing device may again estimate its location. If the two estimated locations are within a threshold distance of one another, the wireless computing device may perform, during a subsequent location-estimating operation, an additional frequency scan using the frequency subset.

Power-efficient location estimation

Systems and methods for identifying mobile access points are provided. In one aspect, a method includes receiving an indication of an accessible access point and an indication of geographic location. The method also includes determining that a stored geographic location associated with the accessible access point is inconsistent with the indication of the geographic location. The method also includes providing, to a server and to a local memory, an indication that the accessible access point is a candidate mobile access point based on the determination that the stored geographic location is inconsistent with the indication of the geographic location.

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Berkeley, CA, United States of America

Stanley Andrews Chesnutt