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Analyzing the quality of crowd sensed WiFi data
Pérez-Penichet, Carlos; Moreira, AdrianoThe widely extended WLAN infrastruc- ture has often been used as geographic landmark to support localization applications and human mobility studies. In these applications a WiFi network made of static nodes seems to be always assumed. Here, evidence is presented to show that this is hardly ever the case. Several independently collected datasets were analyzed to show that dynamic, moving Access Points are often...
Human mobility analysis by collaborative radio landscape observation
Pérez-Penichet, Carlos; Conde, Ângelo; Moreira, AdrianoA new method to analyze the spatio-temporal activities of humans based on the symbolic information that can be extracted from a set of observations of mobile networks taken through smart phones is presented. Specifically, GSM andWiFi network observations collected by several users are gathered to collaboratively build a symbolic base map of the logical structure of the geography. At the same time a map of the m...
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