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The uiuc/uim dataset (v. 2012-01-24)  >  the wifi traceset

There is 1 trace in this traceset
download the uim_exp1_release.tar.gz file
from a CRAWDAD mirror:  US UK AU
size="5.4MB" type="gz" md5="b193038ce818c05fd4e9aa03fcd3e636"
last modified
2012-01-24
reason for most recent change
the initial version.
short description

Traceset of Wi-Fi traces collected from Android phone users at University of Illinois.

description

This is a traceset of ad hoc contacts and MACs of Wi-Fi access points collected by the UIM framework using Google Android phones.

release date
2012-01-24
date/time of measurement start
2010-03-01
date/time of measurement end
2010-03-20
methodology

The Wi-Fi scanner on the phone periodically scans the Wi-Fi access points in the phone's proximity. The scanned results include the MAC addresses of the Wi-Fi access points and the corresponding scanning time stamps. The scanning interval is set to 30 minutes because in the campus environment people usually do not move too far too fast, and also to conserve the phone battery.

sanitization
 Detected MACs are hashed with SHA-1. 
limitation

The Wi-Fi traces may be collected with different frequencies by different users, due to our tuning of frequency for energy-consumption reasons.

disruptions to data collection
The collected traces may have corrupted and broken info since the phones may not work reliably at all the times. Some of interruptions may be caused by the user restarting the phone.
error
The timestamps, both in filenames and inside the files, frequently don't match the actual time when the record was made.
 the uiuc/uim/wifi/2010 trace
 how to cite this traceset