UNC/FORTH Archive of Wireless Traces, Models, and Tools
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maintained by the UNC and FORTH
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Wireless networking environments can
be extremely complex and the interaction of different layers and technologies
may create situations that cannot be foreseen during the design and testing
stages of technology development. It is therefore critical to perform
comprehensive empirical studies in a wide range of production environments to
uncover deficiencies and identify possible optimizations and extensions. The
availability of high-quality measurement and modeling studies would make it
possible to develop wireless networks that are more robust, easier to manage
and scale, and able to utilize scarce resources more efficiently. As part of
our wireless measurements and modelling research, we have created a data
repository.
This data repository is the result
of a joint effort of the Mobile Computing Groups in the Department of Computer
Science at the University of North Carolina (UNC) and the Institute of Computer
Science at the Foundation of Research and
Technology - Hellas (FORTH) in
You can register to access. Free registration . Forgot your password?
Wireless network enviroments
UNC campus wireless LAN
A brief description of the wireless infrastructure in the UNC campus,
with information on the user client population, the number of APs and their
type, is given here.
Examples of the parameters we modeled, with the proposed models,
implemented functions (in matlab) and relevant publications are the following:
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Parameter |
Model |
Probability Density Function |
Related Publication |
Functions |
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AP Visit Duration |
BiPareto |
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Session arrival |
Time-varying Poisson with
rate λ(t) |
N: # of sessions between t1
and t2
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Client arrival |
Time-varying Poisson with rate λ(t) |
Same as above |
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AP of first
association/session |
Lognormal |
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Flow interarrival/session |
Lognormal |
Same as above |
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Flow number/session |
BiPareto |
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Flow size |
BiPareto |
Same as above |
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FORTH campus wireless LAN
A brief description of the
wireless infrastructure in the
SYSLOG traces
UNC SYSLOG data
Syslog traces from the UNC campus
wireless network are available for several periods spanning the interval
September 2004 - June 2005. The format of the available files and more details
for their collection and pre-processing are given .More analytically, available are
the following datasets:
- Syslog Dataset #1 (September 29, 2004 - November 30, 2004)
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Maria
Papadopouli, Haipeng Shen, Manolis Spanakis. Characterizing the duration and
association patterns of wireless access in a campus.11th European Wireless Conference 2005,
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Maria
Papadopouli, Haipeng Shen, Manolis Spanakis. Modeling client arrivals at access points in wireless
campus-wide networks. 14th IEEE Workshop on Local and Metropolitan Area Networks, Chania, Crete, Greece, September
18-21, 2005. (ranked fourth best paper in the reviewing process) [PDF, PS, BIBTEX, PPT].
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·
Syslog Dataset #2 (13 - 20 April and 2 - 9 May,
2005)
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M.
Papadopouli, M. Moudatsos, M. Karaliopoulos. Modeling roaming in large-scale
wireless networks using real measurements. First workshop on advanced EXPerimental
activities ON WIRELESS networks and systems, International Symposium on
a World of Wireless, Mobile and Multimedia Networks (WoWMoM06),
Niagara-Falls/Buffalo, New York, USA, June 26-29, 2006 [PDF,PS,BIBTEX].
SNMP traces
SNMP data collection from the UNC wireless network APs covers the period 2004 - up to now. Details on the pre-processing and formatting of data are given. More analytically, the available SNMP datasets are:
- SNMP dataset #1 (September 29, 2004 - June 26, 2005)
- Maria Papadopouli, Haipeng Shen, Elias
Raftopoulos, Manolis Ploumidis, Felix Hernandez-Campos. Short-term
traffic forecasting in a campus-wide wireless network. 16th Annual IEEE International Symposium on Personal
Indoor and Mobile Radio Communications,
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Felix Hernandez-Campos, Maria Papadopouli. A comparative measurement
study of the workload of wireless access points in campus networks. 16th
Annual IEEE International Symposium on Personal Indoor and Mobile Radio
Communications,
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Maria Papadopouli, Elias Raftopoulos, Haipeng Shen. Evaluation of
short-term traffic forecasting algorithms in wireless networks. 2nd
Conference on Next Generation Internet Design and
- SNMP dataset #2 A second set of SNMP traces
covering the remaining period till the end of 2005 will soon be made
available
FORTH SNMP data
Measurement
data from SNMP pollings of the FORTH wireless infrastructure have been
collected since September 2005.
- SNMP dataset #1 The first set of SNMP traces
covers September, 2005
Packet header traces
UNC data
Flow-level data
from the UNC wireless network are available for the week 13 - 20 April, 2005. The details are provided here.
- Maria Papadopouli, Elias Raftopoulos,
Haipeng Shen. Evaluation of short-term traffic forecasting algorithms
in wireless networks. 2nd Conference on Next Generation Internet
Design and
- Felix Campos, Merkourios Karaliopoulos,
Maria Papadopouli, Haipeng Shen. Spatio-Temporal Modeling of Traffic
Workload in a Campus WLAN. Second annual international Wirless
internet Conference ( WICON06 ),
- Felix Hernandez-Campos, Maria Papadopouli.
Assessing The Real Impact of 802.11 WLANs: A Large-Scale Comparison of
Wired and Wireless Traffic. 14th IEEE Workshop on Local and Metropolitan Area
Networks,
Chania,
Signal strength traces
FORTH data
Signal strength
values have been acquired from several access points at various positions in
FORTH using NetStumbler. More details and the
dataset are provided here.
- Anastasia Katranidou. Location-sensing
using the IEEE 802.11 Infrastructure and the Peer-to-peer Paradigm for
Upcoming Events
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3rd
International Workshop on Wireless Network Measurement [WinMee/WiTMeMo'07]. (CFP)
Past Events
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Second International workshop on Wireless Traffic Measurements and
Modeling, 5 August 2006,
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The 2nd Annual International Wireless Internet Conference, 2-5 August
2006,
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First
International workshop on Wireless Traffic Measurements and Modeling, 5-8
June 2005,
Other Wireless Data Repositories
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Computing Group's main page