Power-Efficient Location Estimation

摘要

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.

主权项

1. A method comprising:
scanning, by a wireless computing device, a frequency set, wherein a first group of base stations use the respective frequencies in the frequency set; based on information relating to one or more base stations in the first group of base stations, estimating, by the wireless computing device, a first location of the wireless computing device; selecting, by the wireless computing device, a frequency subset of the frequency set, wherein the frequency subset includes at least one frequency in the frequency set and excludes at least one frequency in the frequency set, wherein a second group of base stations use the respective frequencies of the frequency subset, and wherein the second group of base stations is a subset of the first group of base stations; based on information relating to one or more base stations in the second group of base stations, estimating, by the wireless computing device, a second location of the wireless computing device; determining, by the wireless computing device, that the first location and the second location are within a threshold distance of one another; and based on the first location and the second location being within a threshold distance of one another, performing, by the wireless computing device, an additional frequency scan, using the frequency subset, during a subsequent location-estimating operation.