CRAWDAD dartmouth/campus dataset (v. 2004-08-05)
Measurement trace from wireless network at Dartmouth College.
This dataset includes measurement trace for over 450 access points and several thousand users at dartmouth college.
last modified: 2006-11-14
reason for most recent change: Infocom 2004 trace is added.
short description: Two-year records showing the location (AP association) of each wireless card seen on campus.
description: Over three years of nearly continuous records showing the location (access-point association) of each wireless card seen on campus. We used this data for our study of location predictors, published in [INFOCOM'04 paper] and a subsequent, expanded [technical report]. This data is derived from the syslog data.
The trace used for this paper is gzipped tar file [51MB].
release date: 2004-08-05
methodology: We extracted user traces from dartmouth/campus/syslog. Each user's trace is a series of locations, that is, access-point names. We introduced the special location 'OFF' to represent the user's departure from the network (which occurs when the user turns off their computer or their wireless card, or moves out of range of all access points). The traces varied widely in length (the number of locations in the sequence). Users with longer traces were either more active (using their card more), more mobile (thus changing access points more often), or used the network for a longer period (some users have been on the network since April 2001, and some others have only recently arrived on campus).
sanitization: same as dartmouth/campus/syslog
disruptions to data collection: same as dartmouth/campus/syslog
limitation: same as dartmouth/campus/syslog
This dataset is part of the CRAWDAD archive. CRAWDAD is the Community Resource for Archiving Wireless Data At Dartmouth, a wireless network data resource for the research community. This archive was created to store wireless trace data from many contributing locations, and staff to develop better tools for collecting, anonymizing, and analyzing the data. The CRAWDAD archive was originally created and maintained by Dartmouth College and can now be on found on IEEE DataPort.