News

Tools updated [January 8, 2010]

We have updated the following tools:

Data set updated [September 11, 2009]

We have released a new version of the dartmouth/campus data set.
Specifically, we have added a list of (recent) AP locations as follows:

New tool added [August 12, 2009]

We have added the WiPal tool to the CRAWDAD archive:


We have also updated the following tool and data:

New data set added [July 31, 2009]

We have added the following data set to the CRAWDAD archive:


The data set was used for the following paper:

Kyunghan Lee, Seongik Hong, Seong Joon Kim, Injong Rhee, and Song Chong. Slaw: A mobility model for human walks. Proceedings of the 28th Annual Joint Conference of the IEEE Computer and Communications Societies (INFOCOM), Rio de Janeiro, Brazil, April 2009. IEEE.

Injong Rhee, Minsu Shin, Seongik Hong, Kyunghan Lee, and Song Chong. On the levy-walk nature of human mobility. Proceedings of the 27th Annual Joint Conference of the IEEE Computer and Communications Societies (INFOCOM), Arizona, USA, April 2008. IEEE.

New data set and tools added [July 9, 2009]

We have added the following data set and tools to the CRAWDAD archive:


The cmu/hotspot data set and Wifi-Scanner tool were used for the following paper:

Jeffrey Pang, Ben Greenstein, Michael Kaminsky, Damon McCoy, and Srinivasan Seshan. Wifi-Reports: Improving Wireless Network Selection with Collaboration. Proceedings of the Seventh International Conference on Mobile Systems, Applications, and Services (MobiSys), Krakow, Poland, June 2009. USENIX Association.

The Wifipcap tool was used for the following paper:

Jeffrey Pang, Ben Greenstein, Ramakrishna Gummadi, Srinivasan Seshan, and David Wetherall. 802.11 user fingerprinting. MobiCom '07: Proceedings of the 13th annual ACM international conference on Mobile computing and networking, pages 99-110, Montreal, Quebec, Canada, 2007. ACM Press.

New data set added [June 26, 2009]

We have added the following data set to the CRAWDAD archive:

  • novay/cosphere (v. 2009-05-01) Network traces on the personal mobile devices of 12 trial participants over a period of one month in the February/March 2007 time frame.


The data set was used for the following paper:

A. Peddemors, H. Eertink, and I. Niemegeers. Density estimation for out-of-range events on personal mobile devices. the 1st ACM SIGMOBILE International Workshop on Mobility Models for Networking Research (MobilityModels'08), 2008.

New data sets added [June 16, 2009]

We have added the following data sets (both are from University of Colorado) to the CRAWDAD archive:


The data set was used for the following paper:

Eric Anderson, Caleb Phillips, Douglas Sicker, and Dirk Grunwald. Modeling environmental effects on directionality in wireless networks. Technical report, University of Colorado at Boulder, 2008.

  • cu/rssi (v. 2009-05-28) Dataset of received signal strength indication (RSSI) collected from within an indoor office building.


The data set was used for the following paper:

Kevin Bauer, Damon McCoy, Ben Greenstein, Dirk Grunwald, and Douglas Sicker. Physical layer attacks on unlinkability in wireless lans. Proceedings of the Ninth Privacy Enhancing Technologies Symposium (PETS 2009), Seattle, WA, USA, August 2009.

New data set added [April 21, 2009]

We have added the following data set to the CRAWDAD archive:

New data sets added [February 24, 2009]

We have added the following two data sets to the CRAWDAD archive:


The data set was used for the following paper:
Michal Piorkowski, Natasa Sarafijanovoc-Djukic, and Matthias Grossglauser. A parsimonious model of mobile partitioned networks with clustering. The First International Conference on COMmunication Systems and NETworkS (COMSNETS), Bangalore, India, January 2009.


The data set was used for the following paper:

Anand Prabhu Subramanian, Jing Cao, Chul Sung, and Samir R. Das. Understanding Channel and Interface Heterogeneity in Multi-channel Multi-radio Wireless Mesh Networks. Tenth Passive and Active Measurement conference (PAM), Seoul, South Korea, April 2009.

New data set and tools added [February 17, 2009]

We have added the following data set to the CRAWDAD archive:


The data set was used for the following paper:

Pierre Ugo Tournoux, Jérémie Leguay, Farid Benbadis, Vania Conan, Marcelo Dias de Amorim, and John Whitbeck. The accordion phenomenon: Analysis, characterization, and impact on dtn routing. Proceedings of the 28rd Annual Joint Conference of the IEEE Computer and Communications Societies (INFOCOM), Rio de Janeiro, Brazil, April 2009. IEEE.

We also have added the following tools to the CRAWDAD archive:


The tools were used for the following papers:

Wolfgang Kiess, Thomas Ogilvie, and Martin Mauve. The EXC Toolkit for Real-World Experiments with Wireless Multihop Networks. EXPONWIRELESS 2008: Proceeding of the 3rd Workshop on Advanced Experimental Activities on Wireless Networks and Systems, Newport Beach, California, USA, June 2008.

Bj�rn Scheuermann, Wolfgang Kiess, Magnus Roos, Florian Jarre, and Martin Mauve. On the Time Synchronization of Distributed Log Files in Networks with Local Broadcast Media. IEEE/ACM Transactions on Networking, 2008.

CRAWDAD - 2 more countries [January 5, 2009]

Happy New Year from CRAWDAD!

In November and December, we added two more countries to the list of homes for CRAWDAD users: Columbia and Uruguay. Welcome! We now have users in 63 countries.

dave

50 datasets and counting [November 4, 2008]

This week we passed another milestone: CRAWDAD now shares 50 datasets with you, the research community. Also last week, we added another country, when a user from the Arab Emirates joined.  Now we have 1,341 users from 61 countries!

dave

New data set added [October 29, 2008]

We have added the following data set to the CRAWDAD archive:

  • hope/amd (v. 2008-08-07) RFID tracking data collected from the seventh HOPE (Hackers On Planet Earth) conference held in July 18-20, 2008.


Data set and tool updated [October 29, 2008]

We have released new versions of the following data set and tool:

New data set added [September 30, 2008]

We have added the following data set to the CRAWDAD archive:


The data set was used for the following paper:
Yu-Chung Cheng, Mikhail Afanasyev, Patrick Verkaik, Péter Benkö, Jennifer Chiang, Alex C. Snoeren, Stefan Savage, and Geoffrey M. Voelker. Automating cross-layer diagnosis of enterprise wireless networks. SIGCOMM '07: Proceedings of the 2007 conference on Applications, technologies, architectures, and protocols for computer communications, pages 25-36, Kyoto, Japan, 2007. ACM.

New data set added [September 11, 2008]

We have added the following data set to the CRAWDAD archive:


The data set was used for the following papers:

Adnan Iqbal, M. Khurram Shahzad, and Syed Ali Khayam. Srvf: An energy-efficient link layer protocol for reliable transmission over wireless sensor networks. Proceedings of the IEEE International Conference on Communications (ICC), pages 146-150, New York, May 2008. IEEE Computer Society Press.

Shirish Karande, Syed Ali Khayam, Yongju Cho, Kiran Misra, Hayder Radha, Jae-Gon Kim, and Jin-Woo Hong. On channel state inference and prediction using observable variables in 802.11b networks. Proceedings of the IEEE International Conference on Communications (ICC), pages 4554-4559, New York, June 2007. IEEE Computer Society Press.

New data set added [August 22, 2008]

We have added the following data set to the CRAWDAD archive:


The data set was used for the following paper:
Wei-jen Hsu, Debojyoti Dutta, and Ahmed Helmy. Mining behavioral groups in large wireless lans. MobiCom '07: Proceedings of the 13th annual ACM international conference on Mobile computing and networking, pages 338-341, Montreal, Quebec, Canada, 2007. ACM Press.

New data set added [August 4, 2008]

We have added the following data set to the CRAWDAD archive:


The data set was used for the following paper:
Joseph Hoffbeck. Rf signal database for a communication systems course. Proceedings of American Society for Engineering Education Annual Conference and Exposition (ASEE 2006), Chicago, IL, USA, June 2006.

New data set added [July 15, 2008]

We have added the following data set to the CRAWDAD archive:


The data set was used for the following paper:
Mongnam Han, Youngseok Lee, Sue Moon, Keon Jang, and Dooyoung Lee. Evaluation of voip quality over wibro. PAM 2008, 9th Passive and Active Measurement conference, pages 51-60, Cleveland, Ohio, April 2008

CiteULike for CRAWDAD bibliography [June 30, 2008]

We have started to use CiteULike ( http://www.citeulike.org ), a free bibliography service, to encourage users to easily share CRAWDAD-related papers with others.

You can see all the papers that use CRAWDAD data and tools at http://www.citeulike.org/group/5303/library . They are tagged with "crawdad". If you want to find only the papers that use a specific data set, e.g., dartmouth/campus, then you can browse them through the "dartmouth_campus" tag.  You can also add your papers to the collection - please do!

New data set added [June 27, 2008]

We have added the following data set to the CRAWDAD archive:


The data set was used for the following paper:
Timothy Ireland, Adam Nyzio, Michael Zink, and Jim Kurose. The impact of directional antenna orientation, spacing, and channel separation on long-distance multi-hop 802.11g networks: A measurement study. Proceedings of the Third Workshop on Wireless Network Measurements (WiNMee 2007), Limassol, Cyprus, Cyprus, April 2007.

New tool added [June 2, 2008]

We have added a wireless trace analysis tool, called Wifidelity, to the CRAWDAD archive as follows:


This tool is described in the following paper:
Aaron Schulman, Dave Levin, and Neil Spring. On the fidelity of 802.11 packet traces. PAM 2008, 9th Passive and Active Measurement conference, pages 132-141, Cleveland, Ohio, April 2008.

CRAWDAD at Mobisys! [May 31, 2008]

CRAWDAD at MobiSys
June 19, 2008
Breckenridge, CO

We are planning a CRAWDAD get-together at lunch on June 19 during MobiSys 2008 (the Sixth Annual International Conference on Mobile Systems, Applications, and Services).  I hope that some of you will be able to attend MobiSys, and if so, to join us for lunch on Thursday.  There will be a sign-up sheet at the conference registration desk where you can indicate your intention to be seated at the CRAWDAD lunch.

It looks like a great program this year:
http://www.sigmobile.org/mobisys/2008/

Data set updated [May 20, 2008]

We have released additional data for the following two data sets:

UK CRAWDAD mirror site [May 6, 2008]

We are pleased to announce the launch of a European mirror web site:
http://uk.crawdad.org

This site is hosted by the University of St Andrews in the UK and provides a copy of the CRAWDAD data sets and tools. Hopefully this will provide faster download speeds for European CRAWDAD users.

We would like to add other mirror sites on different continents. If you are interested in hosting a mirror site, please get in touch.

New data set added [March 31, 2008]

We have added the following data set to the CRAWDAD archive:

  • umich/virgil (v. 2008-03-28) War-walking data set collected in different cities in the United States for the field study and evaluation of an access point selection system.


The data set was used for the following paper:
Anthony J. Nicholson, Yatin Chawathe, Mike Y. Chen, Brian D. Noble, and David Wetherall. Improved access point selection. MobiSys 2006: Proceedings of the 4th international conference on Mobile systems, applications and services, pages 233-245, New York, NY, USA, 2006. ACM Press.

Channel area wiki [January 31, 2008]

We are pleased to announce that we set up a wiki page for the Channel special-interest area:

http://www.crawdad.org/channel.php

The Channel special interest area is designed to encourage the contribution of radio channel and PHY-layer measurement data and data processing tools to the CRAWDAD repository, and to provide a centralized location within the repository for such wireless channel measurements. The Channel area will focus on channel measurement data sets which can be useful in measurement-based simulations or analysis of wireless network protocols, algorithms, security methods, and applications.

Dr. Neal Patwari is the Channel Area Editor for the CRAWDAD project. If you have any Channel/PHY-layer data sets (or tools to help process such data), we encourage you to contact Neal ( npatwari _AT_ ece.utah.edu ) to discuss contributing these to CRAWDAD.

New data set added [January 30, 2008]

We have added the following data set to the CRAWDAD archive:


The data set was used for the following paper:
Paolo Barsocchi, Gabriele Oligeri, and Francesco Potortì. Frame error model in rural Wi-Fi networks. proceedings of the International Symposium on Modeling and Optimization (Wiopt), pages 41-46, Limassol (CY), April 2007. ACM.

crawdad.org [January 24, 2008]

We are pleased to announce that CRAWDAD is now available as
"crawdad.org".  Tell all your friends!

The old name, crawdad.cs.dartmouth.edu, remains valid and indeed both
are the same server.

New data set added [January 14, 2008]

We have added the following data set to the CRAWDAD archive:


The data set was used for the following papers:
Bartosz Wietrzyk, Milena Radenkovic, and Ivaylo Kostadinov. Practical MANETs for Pervasive Cattle Monitoring. To Appear in Proceedings of The Seventh International Conference on Networking (ICN 2008), Cancun, Mexico, April 2008.

New data set added [January 7, 2008]

We have added a ZigBee radio (802.15.4) data set to the CRAWDAD archive as follows:


The data set was used for the following papers:
Emiliano Miluzzo, Xiao Zheng, Kristóf Fodor, and Andrew T. Campbell. Radio Characterization of 802.15.4 and its Impact on the Design of Mobile Sensor Networks. Proceedings of Fifth European Conference on Wireless Sensor Networks (EWSN 2008), Bologna, Italy, January 2008.

CRAWDAD supporters [December 21, 2007]

I am very pleased to announce that both Intel Corporation and Aruba Networks have made generous contributions in support of CRAWDAD.  We are very thankful for their support!

Happy holidays from the CRAWDAD team.

dave

PS.  Some current statistics:

924 users
524 institutions
54 countries

number of datasets: 38
number of tools: 17
number of papers: 110

New data set added [December 20, 2007]

We have added a Bluetooth contact data set to the CRAWDAD archive as follows:


The data set was used for the following papers:
Anirudh Natarajan, Mehul Motani, and Vikram Srinivasan. Understanding urban interactions from bluetooth phone contact traces. PAM 2007, 8th Passive and Active Measurement conference, pages 115-124, Louvain-la-neuve, Belgium, April 2007.
Wei Wang, Vikram Srinivasan, and Mehul Motani. Adaptive contact probing mechanisms for delay tolerant applications. MobiCom '07: Proceedings of the 13th annual ACM international conference on Mobile computing and networking, pages 230-241, Montreal, Quebec, Canada, 2007. ACM Press.

New data set added [December 10, 2007]

We have added a vehicular network data set to the CRAWDAD archive as  
follows:


The data set was used for the following paper:
Ratul Mahajan, John Zahorjan, and Brian Zill. Understanding wifi-based connectivity from moving vehicles. Proceedings of the Internet Measurement Conference, San Diego, CA, USA, October 2007.

We have also added several traces to another vehicular network data set - umass/diesel, which contains bus-based DTN (Disruption-tolerent networks) traces from UMass Amherst campus.

New tools added [December 5, 2007]

We have added a set of tools for 802.11-based positioning systems as  
follows:


These tools are described in the following paper:
Thomas King, Thomas Butter, Hendrik Lemelson, Thomas Haenselmann, and Wolfgang Effelsberg. Loc{lib,trace,eva,ana}: Research tools for 802.11-based positioning systems. Proceedings of the Second ACM International Workshop on Wireless Network Testbeds, Experimental evaluation and CHaracterization (WiNTECH), pages 67-74, Montreal, QC,Canada, September 2007.

New tool added, etc. [November 27, 2007]

We have added a pcap analysis tool to the CRAWDAD archive as follows:


We have also added supplementary information for the pdx/vwave dataset, which contains pcap traces of wireless LAN traffic around Portland, Oregon, collected using a commercial sniffer VWave.
You can download the dataset at http://crawdad.cs.dartmouth.edu/pdx/vwave

New data set added [November 15, 2007]

We have added a multihop wireless network data set to the CRAWDAD archive as follows:


The data set was used for the following paper:
Michael R. Souryal, Johannes Geissbuehler, Leonard E. Miller, and Nader Moayeri. Real-time deployment of multihop relays for range extension. MobiSys '07: Proceedings of the 5th international conference on Mobile systems, applications and services, pages 85-98, San Juan, Puerto Rico, June 2007. ACM Press.

New data set added [October 22, 2007]

We have added a cellular network data set to the CRAWDAD archive as follows:


The data set was used for the following paper:
Youngseok Lee. Measured TCP Performance in CDMA 1x EV-DO Network. PAM 2006, 7th Passive and Active Measurement conference, Adelaide, Australia, March 2006.

New data set added [October 10, 2007]

We have added a new localization dataset to the CRAWDAD archive as follows:


The data set was used for the following paper:
Branislav Kusy, Janos Sallai, Gyorgy Balogh, Akos Ledeczi, Vladimir Protopopescu, Johnny Tolliver, Frank DeNap, and Morey Parang. Radio Interferometric Tracking of Mobile Wireless Nodes. Proceedings of the Fifth International Conference on Mobile Systems, Applications, and Services (MobiSys), San Juan, Puerto Rico, June 2007. USENIX Association.

New data set added [October 1, 2007]

We have added a CIR (Channel Impulse Response) dataset to the CRAWDAD archive as follows:


The data set was used for the following paper:
Neal Patwari and Sneha K. Kasera. Robust location distinction using temporal link signatures. MobiCom '07: Proceedings of the 13th annual ACM international conference on Mobile computing and networking, pages 111-122, Montreal, Quebec, Canada, 2007. ACM Press.

New data set added [September 25, 2007]

We have added an ORBIT dataset ( http://www.orbit-lab.org/ ) to the CRAWDAD archive as follows:


The data set was used for the following paper:
Mesut Ali Ergin, Kishore Ramachandran, and Marco Gruteser. Understanding the effect of access point density on wireless lan performance. MobiCom '07: Proceedings of the 13th annual ACM international conference on Mobile computing and networking, pages 350-353, New York, NY, USA, 2007. ACM Press.

New data set added [September 14, 2007]

We have added a Wi-Fi hotspot dataset and a MANET dataset to the CRAWDAD archive as follows:


The MANET data set was used for the following paper:
Robert S. Gray, David Kotz, Calvin Newport, Nikita Dubrovsky, Aaron Fiske, Jason Liu, Christopher Masone, Susan McGrath, and Yougu Yuan. Outdoor experimental comparison of four ad hoc routing algorithms. Proceedings of the ACM/IEEE International Symposium on Modeling, Analysis and Simulation of Wireless and Mobile Systems (MSWiM), pages 220-229. ACM Press, October 2004. Finalist for Best Paper award.

New data set added [August 30, 2007]

We have added a dataset from Portland State University to the CRAWDAD  
archive as follows:


The data set was used for the following paper:

Caleb Phillips and Suresh Singh. Analysis of WLAN traffic in the wild. Proceedings of IFIP-Networking 2007, Atlanta, Georgia, May 2007.

New data set added [August 17, 2007]

We have added a dataset from Rice University to the CRAWDAD archive as follows:


The data set was used for the following paper:
Ahmad Rahmati and Lin Zhong. Context for Wireless: Context-sensitive energy-efficient wireless data transfer. Proceedings of the Fifth International Conference on Mobile Systems, Applications, and Services (MobiSys), San Juan, Puerto Rico, June 2007. USENIX Association.

Call For Participation - CRAWDAD Workshop 2007 [August 14, 2007]

[Please accept our apologies if you receive multiple copies of this CFP]

                       CALL FOR PARTICIPATION
                       CRAWDAD Workshop 2007
       Community Resource for Archiving Wireless Data At Dartmouth
                  In Cooperation with ACM SIGMOBILE
             http://crawdad.cs.dartmouth.edu/workshop2007
September 14th, 2007, 9:00am - 12:30pm, (Poster Session) 1:30pm-2:30pm
            Co-located with MobiCom in Montreal, Quebec, Canada

CRAWDAD is the Community Resource for Archiving Wireless Data At Dartmouth, an NSF-funded effort to build an archive with the capacity to store wireless trace data and tools from many contributing locations, and with the staff to develop better tools for collecting, sanitizing, and analyzing these data. CRAWDAD supports the research community by providing real data about wireless network usage, including traffic and mobility patterns. The CRAWDAD project is working with the community to ensure that the archive meets community needs. One of our key efforts is to hold an annual, informal workshop at MobiCom to share CRAWDAD news and to encourage the community to help guide the CRAWDAD project. We plan an interactive, collaborative program.

WHO SHOULD ATTEND:
Anyone who collects, or uses, traces of wireless-network activity in their research or product development. This includes people interested in measuring or analyzing wireless-network traffic, wireless-device mobility, or who build models or simulators of wireless networks.

TENTATIVE PROGRAM:
(More speakers may be added later.)

  • Welcome and CRAWDAD introduction, by David Kotz and Tristan Henderson
  • Invited talk by a CRAWDAD data contributor, Benoit Gregoire (Ile Sans Fil)
  • Invited talk by a CRAWDAD user, Stefan Saroiu (University of Toronto)
  • Invited talk by a CRAWDAD user, Ahmed Helmy (University of Florida)
  • Invited talk on CRAWDAD-DatCat gateway, by Colleen Shannon (DatCat/CAIDA)
  • Group discussion about CRAWDAD challenges
  • Poster Session

     Comparing Mobility and Predictability of VoIP and WLAN Traces, Jeeyoung Kim; Yi Du; Mingsong Chen; Ahmed Helmy (University of Florida, US)

     Analyzing Gender-gaps in Mobile Student Societies, Udayan Kumar; Nikhil Yadav; Ahmed Helmy (University of Florida, US)

     Synthetic traffic generation based on Measurement-driven modeling of large Wireless Local Area Networks, Manolis Ploumidis;  Elias Raftopoulos; Maria Papadopouli (University of Crete, GR)

     Connection Duration Statistics for Wireless Devices, P. Ranjan; J. Li (Intelligent Automation, Inc., US)

REGISTRATION: FREE
http://www.sigmobile.org/mobicom/2007/registration.html

For more information, please contact CRAWDAD - at - cs.dartmouth.edu

New data set added [July 30, 2007]

We have added a dataset from WINGS lab at Stony Brook University to the CRAWDAD archive as follows:


You can download the dataset at http://crawdad.cs.dartmouth.edu/sunysb/mobisteer

The data set was used for the following paper:

Vishnu Navda, Anand P. Subramanian, Kannan Dhanasekaran, Andreas Timm-
Giel, and Samir R. Das. MobiSteer: Using Steerable Beam Directional Antenna for Vehicular Network Access. Proceedings of the Fifth International Conference on Mobile Systems, Applications, and Services (MobiSys), San Juan, Puerto Rico, June 2007. USENIX Association.

New data set added [July 26, 2007]

We have added OSDI (Symposium on Operating Systems Design and Implementation) 2006 wireless network data set to the CRAWDAD archive as follows:

Call for Posters - CRAWDAD Workshop 2007 [July 2, 2007]

                       CALL FOR POSTERS

                       CRAWDAD Workshop 2007
       Community Resource for Archiving Wireless Data At Dartmouth
                  In Cooperation with ACM SIGMOBILE
             http://crawdad.cs.dartmouth.edu/workshop2007
                           September 14th

            Co-located with MobiCom in Montréal, Québec, Canada

Important dates:

Extended abstracts due: July 31, 2007
Author notification: August 9, 2007

CRAWDAD is the Community Resource for Archiving Wireless Data At Dartmouth, an NSF-funded effort to build an archive with the capacity to store wireless trace data and tools from many contributing locations, and with the staff to develop better tools for collecting, sanitizing, and analyzing this data. CRAWDAD supports the research community by providing real data about wireless network usage, including traffic and mobility patterns. The CRAWDAD project is working with the community to ensure that the archive meets community needs. One of our key efforts is to hold an annual, informal workshop at Mobicom to share CRAWDAD news and to encourage the community to help guide the CRAWDAD project.

This poster session will provide an opportunity for workshop attendees to learn about new and innovative research related to CRAWDAD data, tools,
and other community resources. Topics of interest include but are not limited to: research (e.g., network characterization, mobility modeling, MANET, VANET, sensor network, DTN, location-based services, security) using CRAWDAD data and tools; data collection methods and experiences; educational use of CRAWDAD resources; tools or methods for visualising or
processing wireless data.

Submissions:

Submissions should take the form of an abstract describing the contributions
or results of the poster. Please submit abstracts (up to two pages, PostScript or PDF) by e-mail to with the subject line "CRAWDAD Poster Submission" by July 31, 2007, 2359 EDT. Accepted abstracts and posters will be made available through the workshop website.

Questions regarding the poster session may be sent to:

David Kotz
CRAWDAD Workshop Chair
crawdad -at - cs.dartmouth.edu

New data set added [June 5, 2007]

We have added two ORBIT ( http://www.orbit-lab.org/ ) data sets to the CRAWDAD archive as follows:


The data sets were used for the following papers:
Sachin Ganu, Kishore Ramachandran, Marco Gruteser, Ivan Seskar, and Jing Deng. Methods for restoring MAC layer fairness in ieee 802.11 networks with physical layer capture. REALMAN '06: Proceedings of the second international workshop on Multi-hop ad hoc networks: from theory to reality, pages 7-14, New York, NY, USA, 2006. ACM Press.

Sanjit Krishnan Kaul, Marco Gruteser, and Ivan Seskar. Creating wireless multi-hop topologies on space-constrained indoor testbeds through noise injection. Proceedings of the 2nd International Conference on Testbeds and Research Infrastructures for the Development of Networks and Communities (TRIDENTCOM 2006), March 2006.

CRAWDAD Newsletter [March 23, 2007]

We have published the first issue of the CRAWDAD Newsletter.
http://crawdad.cs.dartmouth.edu/newsletter/mar07.pdf

This issue features two interviews: one with a CRAWDAD user (Wei-Jen Hsu from the University of Florida) and the other with a CRAWDAD data contributor (Amit Jardosh from UC Santa Barbara).

In each CRAWDAD newsletter, we will announce updates and publish articles that highlight our data and tools, our web site, and research using CRAWDAD data.  Contributions and suggestions welcome! We hope you enjoy the newsletter - and please forward it to all interested parties.

CRAWDAD workshop, September 14, 2007 [March 22, 2007]

Hold the date - CRAWDAD Workshop 2007

http://crawdad.cs.dartmouth.edu/workshop2007.php

In Cooperation with ACM SIGMOBILE
September 14th, 2007

Co-located with MobiCom in Montréal, Québec, Canada

CRAWDAD is the Community Resource for Archiving
Wireless Data At Dartmouth, an NSF-funded effort
to build an archive with the capacity to store
wireless trace data and tools from many
contributing locations, and with the staff to
develop better tools for collecting, anonymizing,
and analyzing this data. CRAWDAD supports the
research community by providing real data about
wireless network usage, including traffic and
mobility patterns. The CRAWDAD project is working
with the community to ensure that the archive
meets community needs. One of our key efforts is
to hold an annual, informal workshop at Mobicom
to share CRAWDAD news and to encourage the
community to help guide the CRAWDAD project. We
are planning an interactive, collaborative
program.

New data set added [March 1, 2007]

We have added a Bluetooth connectivity data set to the CRAWDAD archive as follows:


The data set was used for the following paper:
Jason LeBrun and Chen-Nee Chuah. Bluetooth content distribution stations on public transit. MobiShare '06: Proceedings of the 1st international workshop on Decentralized resource sharing in mobile computing and networking, pages 63-65, Los Angeles, California, 2006.

New tool added [February 22, 2007]

We have added a sanitization (anonymization) tool to the CRAWDAD archive as follows:


The tool is described in the following paper:
Adam Slagell, Kiran Lakkaraju, and Katherine Luo. FLAIM: A Multi-level Anonymization Framework for Computer and Network Logs. Proceeding of the 20th USENIX Large Installation System Administration Conference (LISA '06), Washington, D.C., December 2006.

New sensor network data set added [February 20, 2007]

We have added ZebraNet sensor network data set to the CRAWDAD archive  
as follows:


The data set was used for the following papers:

Ting Liu, Christopher Sadler, Pei Zhang, and Margaret Martonosi. Implementing Software on Resource-Constrained Mobile Sensors: Experiences with Impala and ZebraNet. Proceedings of the Second International Conference on Mobile Systems, Applications, and Services (MobiSys), Boston, MA, June 2004. USENIX Association.

Yong Wang, Sushant Jain, Margaret Martonosi, and Kevin Fall. Erasure Coding Based Routing for Opportunistic Networks. Proceeding of the 2005 ACM SIGCOMM workshop on Delay-tolerant networking, Philadelphia, PA, August 2005. ACM Press.

Pei Zhang, Christopher Sadler, Stephen Lyon, and Margaret Martonosi. Hardware Design Experiences in ZebraNet. Proceedings of the 2nd international conference on Embedded networked sensor systems (Sensys), Baltimore, MD, November 2004. ACM.

Wireless mesh network data set added [February 16, 2007]

We have added a wireless mesh network data set (collected from UCSB) to the CRAWDAD archive as follows:


The data set was used for the following papers:
Krishna Ramachandran, Irfan Sheriff, Elizabeth Belding, and Kevin Almeroth. Routing stability in static wireless mesh networks. Proceedings of the eighth Passive and Active Measurement conference, Louvain-la-neuve, Belgium, April 2007.

Syslog trace and tool added [February 8, 2007]

We have added a new syslog trace (collected from 2005 to 2006) to dartmouth/campus data set. We also added a syslog_parser tool to the CRAWDAD archive as follows:

Sensor network data set added [November 27, 2006]

We have added a sensor network data set to the CRAWDAD archive as  
follows:

The data set was used for the following paper:
Shane B. Eisenman and Andrew T. Campbell. E-CSMA: Supporting enhanced CSMA performance in experimental sensor networks using per-neighbor transmission probability thresholds. Proceedings of the 26th IEEE International Conference on Computer Communications (INFOCOM), Anchorage, AL, May 2007.

New data set added [November 26, 2006]

We have added a Bluetooth data set to the CRAWDAD archive as follows:

The data set was used for the following paper:
Jérémie Leguay, Anders Lindgren, James Scott, Timur Friedman, and Jon Crowcroft. Opportunistic content distribution in an urban setting. Proceedings of the ACM SIGCOMM Workshop on Challenged Networks (CHANTS 2006), Pisa, Italy, September 2006.

New data set added [October 25, 2006]

We have added a wireless monitoring data set to the CRAWDAD archive as follows:

The data set was used for the following paper:
Amit P. Jardosh, Kimaya Mittal, Krishna Ramachandran, Elizabeth M. Belding, and Kevin C. Almeroth. IQU: Practical queue-based user association management for wlans. Proceedings of the Twelfth Annual International Conference on Mobile Computing and Networking (MobiCom), Los Angeles, CA, September 2006.

Download links changed [October 12, 2006]

1. We have changed all download links to http://crawdad.cs.dartmouth.edu/dowload/data_or_tool_name/local_path
Download links you might have bookmarked will no longer work, so please update them.
2. You can access a metadata page of a data/tool at http://crawdad.cs.dartmouth.edu/data_or_tool_name
For example, you can access a metadata page of ucsd/sigcomm2001 at http://crawdad.cs.dartmouth.edu/ucsd/sigcomm2001

Tools updated [October 11, 2006]

We have released new versions of the following tools:

CRAWDAD Workshop Concluded [October 5, 2006]

This year we had 37 people in our sign-up sheets, but the 49 chairs in the room were nearly full during parts of the workshop. Thank you to the attendees who created an enjoyable and interactive workshop, and to our invited speakers for their excellent talks. You can find the agenda and the slides at
http://crawdad.cs.dartmouth.edu/events.php?show=2006

New PADS-based tool added, etc. [September 22, 2006]

1. We have added a PADS (A System for Processing Ad-hoc Data)-based snmp processing tool to the CRAWDAD archive as follows:

To build and use the library and tools, the PADS system( http://www.padsproj.org ) needs to be installed. We plan to release more PADS-based tools, which can allow the users to manipulate various trace formats available in CRAWDAD archive.

2. Prof. Tracy Camp has updated "MANET Area" wiki. Please visit to read the news in MANET Area.

New data set added [September 21, 2006]

We have added a signal strength data set to the CRAWDAD archive as follows:

The data set was used for the following paper:
T. King, S. Kopf, T. Haenselmann, C. Lubberger, and W. Effelsberg. Compass: A probabilistic indoor positioning system based on 802.11 and digital compasses. Proceedings of the First ACM International Workshop on Wireless Network Testbeds, Experimental evaluation and CHaracterization (WiNTECH), Los Angeles, CA, USA, September 2006.

New tool added [September 20, 2006]

We have added a 802.11 MAC analysis tool to the CRAWDAD archive as follows:

The tool was used for the following paper:
R. Mahajan, M. Rodrig, D. Wetherall, and J. Zahorjan. Analyzing the mac-level behavior of wireless networks. Proceedings of the ACM SIGCOMM, Pisa, Italy, September 2006.

New data set added [September 19, 2006]

We have added a bluetooth activity data set to the CRAWDAD archive as  
follows:

The data set was used for the following paper:
J. Su, K.K. Chan, A.G. Miklas, K. Po, A. Akhavan, S. Saroiu, E.D. Lara, and A. Goel. A preliminary investigation of worm infections in a bluetooth environment. Proceedings of the ACM Workshop on Rapid Malcode (WORM), Alexandria, VA, USA, November 2006.

New tool added [August 30, 2006]

We have added a new wireless tool to the CRAWDAD archive as follows:


This tool was used for the following paper:

D. Koukis, S. Antonatos, D. Antoniades, P. Trimintzios, E.P. Markatos. A Generic Anonymization Framework for Network Traffic. In Proceedings of the IEEE International Conference on Communications (ICC 2006) June 2006, Istanbul, Turkey.

CFP: CRAWDAD Wireless Measurement Workshop at MobiCom [August 11, 2006]

[Apologies if you receive this message more than once due to
cross-posting]

                       CALL FOR PARTICIPATION

                       CRAWDAD Workshop 2006
       Community Resource for Archiving Wireless Data At Dartmouth
                  In Cooperation with ACM SIGMOBILE
             http://crawdad.cs.dartmouth.edu/workshop2006
                   September 25th, 1:30pm-6:00pm

            Co-located with MobiCom in Los Angeles, CA, USA

CRAWDAD is the Community Resource for Archiving Wireless Data At
Dartmouth, an NSF-funded effort to build an archive with the capacity
to store wireless trace data and tools from many contributing
locations, and with the staff to develop better tools for collecting,
sanitizing, and analyzing this data. CRAWDAD supports the research
community by providing real data about wireless network usage,
including traffic and mobility patterns. The CRAWDAD project is
working with the community to ensure that the archive meets community
needs. One of our key efforts is to hold an annual, informal workshop
at Mobicom to share CRAWDAD news and to encourage the community to
help guide the CRAWDAD project. We are planning an interactive,
collaborative program.

WHO SHOULD ATTEND:
Anyone who collects, or uses, traces of wireless-network activity in
their research or product development. This includes people interested
in measuring or analyzing wireless-network traffic, wireless-device
mobility, or who build models or simulators of wireless networks.

TENTATIVE PROGRAM:

  • Welcome and CRAWDAD introduction, by David Kotz and Tristan

   Henderson

  • CRAWDAD web site and demo by Jihwang Yeo
  • Invited talk by CRAWDAD user, Songwu Lu (UCLA)
  • Invited talk by CRAWDAD data contributor, James Scott (Intel

   Research Cambridge)

  • Refreshments: ample munchies and beverages
  • Invited talk on educational uses of CRAWDAD by Mark Hansen (UCLA)
  • Break-out group discussion on the future of CRAWDAD


REGISTRATION: FREE
But please pre-register at the MobiCom 2006 site so that we can order
enough food.
http://www.sigmobile.org/mobicom/2006/registration.html

For more information, please contact CRAWDAD@cs.dartmouth.edu

New tool added [August 10, 2006]

We have added a new wireless tool to the CRAWDAD archive as follows:

New data set added [August 4, 2006]

We have added a campus contact pattern data set to the CRAWDAD archive as follows:

  • nus/contact (v. 2006-08-01) Dataset of contact patterns among  students, collected during the Spring semester of 2006 in National University of Singapore.

The data set was used for the following paper:
Vikram Srinivasan, Mehul Motani, and Wei Tsang Ooi. Analysis and Implications of Student Contact Patterns Derived from Campus Schedules. To appear in Proceedings of the Twelfth Annual International Conference on Mobile Computing and Networking (MobiCom), Los Angeles, CA, September 2006.

Wiki pages added [August 1, 2006]

We are pleased to announce that we have added wiki pages to the CRAWDAD site. http://crawdad.cs.dartmouth.edu/wiki

The CRAWDAD wiki provides HOWTO documentation in the following  
categories:

  • Sanitization
  • Collection
  • IRB (Institutional Review Board) and the requirements for human-subjects research clearance
  • Data processing
  • CRAWDAD Datasets
  • CRAWDAD Tools
  • Help on CRAWDAD site usage
  • FAQ
  • (and many more...)


We also set up the following wikis for special-interest "Areas" within our collection:

  • MANET
  • Education

CRAWDAD Welcomes John McHugh as Education Area Editor [July 31, 2006]

We are very pleased to announce that Prof. John McHugh has been appointed Education Area Editor for the CRAWDAD project.
                                                                        
One of the big goals of the CRAWDAD project is to encourage and support the use of wireless traces in courses - perhaps in classroom demonstrations, homework assignments, or term projects.  We think there are many creative ways to use wireless data for education... let us know your ideas!
                                                                                                                                        
If you have ever used wireless traces (particularly if they are from CRAWDAD) for teaching purposes, please contact John - we'd love to to hear your story.  Perhaps you can share your lecture notes, homework assignment, or a summary of how you use wireless data in your course.

New tool added [July 14, 2006]

We have added a new wireless tool to the CRAWDAD archive as follows:

This tool was used for the following paper:
Feng Li, Mingzhe Li, Rui Lu, Huahui Wu, Mark Claypool, and Robert Kinicki. Tools and techniques for measurement of IEEE 802.11 wireless networks. Proceedings of the Second Workshop on Wireless Network Measurements ( WiNMee 2006 ), Boston, MA, USA, April 2006.

CFP: CRAWDAD 2006 Workshop at MobiCom [June 23, 2006]

                       CALL FOR PARTICIPATION

                       CRAWDAD Workshop 2006
       Community Resource for Archiving Wireless Data At Dartmouth
                  In Cooperation with ACM SIGMOBILE
             http://crawdad.cs.dartmouth.edu/workshop2006
                   September 25th, 1:30pm-6:00pm

            Co-located with MobiCom in Los Angeles, CA, USA

CRAWDAD is the Community Resource for Archiving Wireless Data At Dartmouth, an NSF-funded effort to build an archive with the capacity to store wireless trace data and tools from many contributing locations, and with the staff to develop better tools for collecting, sanitizing, and analyzing this data. CRAWDAD supports the research community by providing real data about wireless network usage, including traffic and mobility patterns. The CRAWDAD project is working with the community to ensure that the archive meets community needs. One of our key efforts is to hold an annual, informal workshop at Mobicom to share CRAWDAD news and to encourage the community to help guide the CRAWDAD project. We are planning an interactive, collaborative program.

WHO SHOULD ATTEND:
Anyone who collects, or uses, traces of wireless-network activity in their research or product development. This includes people interested in measuring or analyzing wireless-network traffic, wireless-device mobility, or who build models or simulators of wireless networks.

TENTATIVE PROGRAM:

  • Welcome and CRAWDAD introduction, by David Kotz and Tristan Henderson
  • CRAWDAD web site and demo by Jihwang Yeo
  • Invited talk by CRAWDAD user, Songwu Lu (UCLA)
  • Invited talk by CRAWDAD data contributor, James Scott (Intel Research Cambridge)
  • Refreshments: ample munchies and beverages
  • Invited talk on educational uses of CRAWDAD by Mark Hansen (UCLA)
  • Break-out group discussion on the future of CRAWDAD


REGISTRATION: FREE
But please pre-register at the MobiCom 2006 site so that we can order enough food.

http://www.sigmobile.org/mobicom/2006/registration.html
(The registration site may not be up yet.)

New data set added [June 2, 2006]

We have added another location-aware data set (collected using Placelab software) to the CRAWDAD archive as follows:

  • dartmouth/wardriving (v. 2006-06-02) : Location-aware data set for analyzing the errors in location estimates.


The data set was used for the following paper:

Minkyong Kim, Jeff Fielding, and David Kotz. Risks of using AP locations discovered through war driving. Proceedings of the Fourth International Conference on Pervasive Computing, May 2006.

CRAWDAD Welcomes Tracy Camp as MANET Area Editor [May 30, 2006]

We are very pleased to announce that Dr. Tracy Camp has been appointed MANET (Mobile Ad hoc NETworking) Area Editor for the CRAWDAD project.          
                                                                                
She will seek out interesting MANET data sets. She will also collect software tools that can help researchers use MANET data sets or take MANET measurements.                                                            

If you have any MANET data sets (or tools to help process MANET data), we encourage you to contact Tracy to discuss contributing these to CRAWDAD.                                                                    
                                                                                
Short Bio: Tracy Camp is an Associate Professor of Computer Science at the Colorado School of Mines. She is the Director of Toilers, an active research group in self-organizing networks. She has received 12 grants          
from NSF, including a CAREER award in 1997. This funding has produced 11 software packages which have been requested from (and shared with) more than 560 researchers from 307 research labs/universities in 43 countries (as of December 2005).  She has published over 50 refereed articles and 9 invited articles, many of which are in prestigious venues such as MobiCom and MobiHoc. She has been on the program committee of several conferences, including MobiCom, ICDCS, WCNC, ICPADS, AdHocNow, VANET, and MSN. Dr. Camp is currently a Fulbright Scholar in New Zealand, a member of the Ad Hoc Networks Journal editorial board, and the elected Treasurer of ACM's Special Interest Group on Mobile Computing (SIGMOBILE).
                                              
http://www.mines.edu/fs_home/tcamp/                                            
http://toilers.mines.edu

Location-aware data sets added [May 18, 2006]

We have added two location-aware data sets (both collected using Placelab software) to the CRAWDAD archive as follows:

  • uw/places (v. 2006-05-02) : Location-aware data set for extracting significant places
  • intel/placelab (v. 2004-12-17) : Location-aware dataset collected using Place Lab software


New papers (INFOCOM 2006) in CRAWDAD [May 9, 2006]

We have added three new papers published in Proceedings of INFOCOM 2006, which was held in Barcelona, Spain, April 23-29.
The paper list is as follows (related data sets in parenthesis):

  • (dartmouth/campus) Nathanael Thompson, Guanghui He, Haiyun Luo, "Flow Scheduling for End-host Multihoming".
  • (dartmouth/campus, cambridge/haggle) Augustin Chaintreau, Pan Hui, Jon Crowcroft, Christophe Diot, Richard Gass, James Scott, "Impact of Human Mobility on the Design of Opportunistic Forwarding Algorithms".
  • (intel/home) Konstantina Papagiannaki, Mark Yarvis, W. Steven Conner, "Experimental Characterization of Home Wireless Networks and Design Implications"


New data sets [April 23, 2006]

We have added three new data sets to the CRAWDAD archive
as follows:

  • uw/sigcomm2004 (v. 2005-08-01) : Data set of wireless network measurement in SIGCOMM 2004 conference
  • gatech/vehicular (v. 2006-03-15) : Data set for short range communications between vehicles and between vehicle and roadside station
  • intel/home (v. 2006-04-16) : Connectivity and throughput measurement from home wireless networking


New wireless measurement papers (WiNMee 2006) [April 5, 2006]

We have added 15 new wireless measurement papers published in Proceedings of the Second Workshop on Wireless Network Measurements(WiNMee 2006). The workshop was held in Boston, MA, USA, on April 3, 2006.

You can find the papers in our bibliography page at http://crawdad.cs.dartmouth.edu/biblio.php

Or you can search for them with the keyword 'winmee' and the year '2006' in our advanced search page at http://crawdad.cs.dartmouth.edu/search.php?s=1

New data set added [March 20, 2006]

We are pleased to announce that a new data set, the in-motion data set from Intel Research Cambridge, has been added to the CRAWDAD archive.

The new data set, named cambridge/inmotion, contains the traces of UDP and TCP
transfers between a car traveling at speeds from 5 mph to 75 mph, and an 802.11b access point.

The data set was used for the following papers:

Richard Gass, James Scott, and Christophe Diot, Measurements of 802.11 In-Motion Networking, To appear in the 7th IEEE Workshop on Mobile Computing Systems and Applications,Semiahmoo Resort, Washington, USA, April, 2006

Richard Gass, James Scott, and Christophe Diot. Measurements of In-Motion 802.11 Networking. Technical Report IRC-TR-05-050, Intel Research Technical Report, 2005.

New web site, new data sets [March 3, 2006]

We are pleased to announce that we have made major updates for the CRAWDAD web site. We have added metadata pages to provide a structured description of each data set, so that you can easily understand and use CRAWDAD data and tools.  This metadata is also available as an XML download in case you want to automatically process it yourself.

The features of the new web site include:

  • Several new data sets (e.g., bluetooth, MANET, and DTN (disruption tolerant network) traces) and tools added.
  • Structured description (metadata) of data and tools
  • Basic and Advanced search on CRAWDAD data, tools, authors, and papers

CRAWDAD workshop summary [November 7, 2005]

The CRAWDAD workshop at Mobicom 2005 was a great success.

Wireless network researchers are seriously starved for data about how
real users, applications, and devices use real networks under real
network conditions. CRAWDAD (Community Resource for Archiving
Wireless Data at Dartmouth) is a new National Science
Foundation-funded project to build a wireless-network data archive
for the research community. It will host wireless data and provide
tools and documents to make collecting and using the data easy. This
resource should help researchers identify and evaluate real and
interesting problems in mobile and pervasive computing. To learn more
about CRAWDAD and discuss its direction, about 30 interested people
gathered at a workshop held in conjunction with MobiCom 2005.

We published a more complete summary in IEEE Pervasive Computing magazine:
http://doi.ieeecomputersociety.org/10.1109/MPRV.2005.75

CRAWDAD welcomes Jihwang Yeo [October 30, 2005]

I am very pleased to announce that the CRAWDAD project - a community
resource for archiving wireless data at Dartmouth -- has just hired a
fulltime programmer   We also just received our two new servers last
week.   So... we can all look forward to much more activity in the
coming months.

---------------------------------------------
Jihwang Yeo is a programmer for CRAWDAD project. He received the M.S.
degree in Computer Science from University of Maryland, College Park
MD, in 2005. He received the B.S. degree and another M.S. degree in
Computer Engineering from Seoul National University, Seoul, Korea, in
1994 and 1996, respectively. He was a research assistant in MIND
(Maryland Information and Network Dynamics) lab at University of
Maryland, where his primary contribution was the development of a
wireless monitoring technique for the analysis and modeling of
wireless traffic.
---------------------------------------------

New wireless measurement papers (WiNMee 2006) [August 30, 2005]

new wireless measurement related papers
at UNC. (Complete information can be found at
http://www.cs.unc.edu/~maria/papers-index.html)

  Modeling client arrivals at access points in wireless campus-wide networks.
14th IEEE Workshop on Local and Metropolitan Area Networks.
http://www.cs.unc.edu/~maria/lanman05-A.pdf

  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
http://www.cs.unc.edu/~maria/lanman05-B.pdf

  Short-term traffic forecasting in a campus-wide wireless network.16th Annual
IEEE International Symposium on Personal Indoor and Mobile Radio
Communications.
http://www.cs.unc.edu/~maria/pimrc05-A.pdf

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
http://www.cs.unc.edu/~maria/pimrc05-B.pdf

Wireless-measurement postdoc position [August 30, 2005]

-- from Maria --

Dear colleagues,

I have a postdoctoral research position available in the Mobile Computing
Group at UNC with main focus on the area of measurements, modeling, and
analysis on wireless networks.

It is a 1-year position (possible renewal at the end of the term). Candidates
should have a very good knowledge of 802.11, wireless networking, and
experience with networking measurements studies.

Interested applicants should submit their CV directly to Prof. Maria
Papadopouli via email (maria@cs.unc.edu).

--
Maria Papadopouli    http://www.cs.unc.edu/~maria
Department of Computer Science
University of North Carolina at Chapel Hill

CRAWDAD Programmer position available [July 25, 2005]

CRAWDAD project is hiring a programmer for a three-year term position. The new programmer will have primary responsibility for developing computer software for collecting and processing data. He or she will also install and manage computer servers that archive this measurement data and make it accessible to the worldwide research community, and will provide continuity, consistency, and communications to ensure the project meets the needs of the research community.

http://crawdad.cs.dartmouth.edu/job.php

CRAWDAD project launches [July 8, 2005]

CRAWDAD, the Community Resource for Archiving Wireless Data At Dartmouth, is a new NSF-funded project that will create a community resource for archiving and working with wireless data.

http://crawdad.cs.dartmouth.edu