ACM MobiCom Workshop on Challenged Networks (Chants 2011)
Las Vegas, Nevada - September 23, 2011



Call For Papers (PDF)

Challenged networks comprise those situations where communication is desired, but traditional internet protocol architectures fail to provide it effectively. Such networks may be characterized by intermittent connectivity, a heterogeneous mix of nodes, nodal churn, and widely varying network conditions. Common examples of challenged networks include high delay environments such as inter-planetary networks, limited power environments such as sensor and wildlife monitoring networks, underwater networks, and communication in settings that lack infrastructure such as rural and remote areas, and military battlefields. Challenged networks may also be found in everyday settings, when access to traditional infrastructure is restricted, expensive, overly complex, or rapidly changing. The goal of the challenged network engineer is to design and implement systems for effective and efficient communication in this diverse range of conditions.

This workshop builds on the success of the five previous CHANTS workshops, and WDTN 2005. CHANTS provides an ideal venue for researchers and engineers to present cutting-edge work and results in the field of challenged networks. The workshop solicits papers and demos addressing the following topics:

  • Delay/disruption-tolerant networks (DTNs)
  • Architecture, design, implementation, and evaluation of communication systems for challenged networks
  • Case studies involving real challenged network solutions in various stages of development or use
  • Analysis and characterization of challenged networks and protocols
  • Applications in challenged networks (disaster relief and emergency management, vehicular networks)
  • Configuration, management, and monitoring of challenged networks
  • Security/Privacy concerns and solutions in challenged networks
  • Real-world mobility traces of challenged environments
  • Test and simulation tools for evaluating challenged network systems
  • Applications challenged networking techniques to communication in daily life

Selected papers will be forward-looking, will describe their relationship to existing work, and will have impact and implications for ongoing or future research. We aim to accept approximately 12 papers, and to have a highly interactive workshop. In addition, demos have been an integral part of CHANTS, and we aim to accept up to ten demos.

Submission Instructions


Submitted papers must be no more than 6 pages long, and should adhere to the standard ACM conference proceedings format.

Paper submissions will be handled via EDAS.


Demo abstracts (to be published as part of the proceedings) shall be at most 2 pages plus a one page description of the precise setup and requirements.

Important Dates (Deadlines Extended)

Abstract Registration: 6 May 2011 9 May 2011
Submission Deadline: 13 May 2011
18 May 2011
Demo Submission: 1 July 2011
Acceptance Notification: 28 June 2011
Camera Ready Due: 15 July 2011


Ahmed Helmy (helmy(at)
University of Florida, USA

Franck Legendre (legendre(at)
ETH Zurich, Switzerland