Patent ID: 9730015
Date: 2017-08-08
CPC Classifications: G01S,H04W

Claim:
1. A method comprising: detecting, by a mobile device and at a first time, one or more wireless local area networks; storing first information regarding the one or more wireless local area networks detected by the mobile device at the first time; detecting, by the mobile device and at a second time that is subsequent to the first time, one or more wireless local area networks; storing second information regarding the one or more wireless local area networks detected by the mobile device at the second time; comparing the first information to the second information to identify one more differences between the first information and the second information; determining that the one or more differences between the first information and the second information indicate that at least one of (i) the one or more wireless local area networks detected by the mobile device at the first time does not include at least one of the one or more wireless local area networks detected by the mobile device at the second time, (ii) that the one or more wireless local area networks detected by the mobile device at the second time does not include at least one of the one or more wireless local area networks detected by the mobile device at the first time, or (iii) a signal strength between the mobile device and a particular wireless local area network of the one or more wireless local area networks detected at the first time is different than, by more than a threshold amount, a signal strength between the mobile device and the particular wireless local area network at the second time; and sending, at least partly in response to the determining, at least a portion of the second information to a location lookup system.