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1. (WO2018081160) APPARATUS AND METHOD FOR TRACKING THE POSITION OF AN INTERMITTENTLY OPERABLE WI-FI TAG

Pub. No.:    WO/2018/081160    International Application No.:    PCT/US2017/058135
Publication Date: Fri May 04 01:59:59 CEST 2018 International Filing Date: Wed Oct 25 01:59:59 CEST 2017
IPC: H04W 4/02
H04W 48/20
H04W 64/00
H04W 88/06
Applicants: IPASS INC.
Inventors: WALDORF, Keith
LARA, Marcos R.
KONKA, Raghu
Title: APPARATUS AND METHOD FOR TRACKING THE POSITION OF AN INTERMITTENTLY OPERABLE WI-FI TAG
Abstract:
A server has a processor and a memory connected to the processor. The memory stores instructions executed by the processor to collect scan lists from client devices, where each scan list specifies a Wi-Fi access point identifier collected by a client device and geographic coordinates of the client device when the Wi-Fi access point identifier was collected. A cluster of geographic coordinates around a designated Wi-Fi access point is formed. A centroid within the cluster is identified. The location of the centroid is ascribed the geographic position of the designated Wi-Fi access point. The geographic position of the designated Wi-Fi access point is added to a Wi-Fi access point location database. A Wi-Fi tag scan list is processed to form a tag path listing known geographic locations of Wi-Fi access points observed by the Wi-Fi tag. The tag path is supplied in response to a request.