last modified

2008-10-21

reason for most recent change

The following traces have been added: transfer/fall2007, transfer/ap_connectivity, and transfer/vifi.

release date

2008-10-21

date/time of measurement start

2005-01-25

date/time of measurement end

2007-12-14

website

prisms.cs.umass.edu/diesel/

network type

802.11 infrastructure

network type

Disruption tolerant network (DTN)

collection environment

We have constructed a DTN testbed composed of 30-40 buses operated by the UMass Amherst branch of the Pioneer Valley Transport Authority (PVTA) that we have fitted with a custom package of off-the-shelf hardware. This testbed is called UMassDieselNet. The transit buses service an area sparsely covering approximately 150 square miles.

The route each bus is placed on each day is chosen by the garage dispatcher and can change during the day. Buses can leave the network at any time. We did not try to automatically determine the routes of buses, though this is possible with some significant effort. We decided against this approach after finding GPS data often inconsistent or containing gaps where line-of-sight to satellites was lost.

network configuration

The testbed began operating in May 2004 with five buses. Each bus carries a HaCom Open Brick computer (P6-compatible 577Mhz CPU, 256MB RAM). An 802.11b Access Point (AP) is attached to each brick to provide DHCP access to passengers and passersby. A second USB-based 802.11b interface constantly scans the surrounding area for DHCP offers and other buses. Each bus also has a GPS device attached to the brick. Each brick runs Linux on a 40GB notebook hard drive.

data collection methodology

See the metadata of each traceset or trace for details of collection methodology.

• John Burgess
  
• John Zahorjan
  zahorjan@cs.washington.edu
  
• Ratul Mahajan
  ratul@microsoft.com
  
• Brian Neil Levine
  University of Massachusetts, Amherst
  Department of Computer Science
  Associate Professor
  Room 346 Computer Science Research Bldg, 140 Governors Drive, Amherst, MA 01003
  413-577-0238
  413-545-1249
  www.cs.umass.edu/~brian/
  
• Aruna Balasubramanian
  arunab@cs.umass.edu
  University of Massachusetts, Amherst
  Department of Computer Science
  Ph.D. Student
  Computer Science Research Bldg, 140 Governors Drive, Amherst, MA 01003
  413-545-0582
  www.cs.umass.edu/~arunab
  
• Arun Venkataramani
  arun@cs.umass.edu
  University of Massachusetts, Amherst
  Department of Computer Science
  Assistant Professor
  Computer Science Research Bldg, 140 Governors Drive, Amherst, MA 01003
  (413) 545-3651
  www.cs.umass.edu/~arun
  
• Yun Zhou
  
• Bruce Croft
  croft@cs.umass.edu
  University of Massachusetts, Amherst
  Department of Computer Science
  Distinguished Professor
  Computer Science Research Bldg, 140 Governors Drive, Amherst, MA 01003
  (413) 545-0463
  (413) 545-1789
  ciir.cs.umass.edu/personnel/croft.html
  
• Nilanjan Banerjee
  nilanb@cs.umass.edu
  University of Massachusetts, Amherst
  Department of Computer Science
  PhD Candidate
  Computer Science Research Bldg, 140 Governors Drive, Amherst, MA 01003
  www.cs.umass.edu/~nilanb/
  
• Mark Corner
  mcorner@cs.umass.edu
  University of Massachusetts, Amherst
  Department of Computer Science
  Assistant Professor
  Computer Science Research Bldg, 140 Governors Drive, Amherst, MA 01003
  (413) 545-3788
  prisms.cs.umass.edu/mcorner
  
• Don Towsley
  towsley@cs.umass.edu
  University of Massachusetts, Amherst
  Department of Computer Science
  Professor
  (413) 545-0207
  www-net.cs.umass.edu/personnel/towsley.html
  

When writing a paper that uses CRAWDAD datasets, we would appreciate it if you could cite both the authors of the dataset and CRAWDAD itself, and identify the exact dataset using the appropriate version number. For this dataset, this citation would look like:

John Burgess, John Zahorjan, Ratul Mahajan, Brian Neil Levine, Aruna Balasubramanian, Arun Venkataramani, Yun Zhou, Bruce Croft, Nilanjan Banerjee, Mark Corner, Don Towsley, CRAWDAD dataset umass/diesel (v. 2008‑09‑14), downloaded from https://crawdad.org/umass/diesel/20080914, Sep 2008.

• Cite using BibTeX
• Cite using RIS

@misc{umass-diesel-20080914,
    author = {John Burgess and John Zahorjan and Ratul Mahajan and Brian Neil Levine and Aruna Balasubramanian and Arun Venkataramani and Yun Zhou and Bruce Croft and Nilanjan Banerjee and Mark Corner and Don Towsley},
    title = {{CRAWDAD} dataset umass/diesel (v. 2008-09-14)},
    howpublished = {Downloaded from \url{https://crawdad.org/umass/diesel/20080914}},
    month = sep,
    year = 2008
}

TY  - DATA
TI  - CRAWDAD dataset umass/diesel (v. 2008-09-14)
UR  - https://crawdad.org/umass/diesel/20080914
PY  - 2008/09/14/
AU  - John Burgess
AU  - John Zahorjan
AU  - Ratul Mahajan
AU  - Brian Neil Levine
AU  - Aruna Balasubramanian
AU  - Arun Venkataramani
AU  - Yun Zhou
AU  - Bruce Croft
AU  - Nilanjan Banerjee
AU  - Mark Corner
AU  - Don Towsley
ER  -

If you do not use the provided citation formats, please include a reference with the same information, as described in the CRAWDAD FAQ.