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Context-Aware RouTing Over Opportunistic Networks



In the everyday life of people moving within an urban area, a campus or a building, there are several applications, ranging from ambient intelligence to entertainment, group coordination and information sharing. For these applications the availability of a low cost, scalable meshed radio infrastructure would more efficiently support the interaction with other mobile devices than the classical one hop radio access to global networks. Recent studies on the human mobility and aggregation behaviors, together with in-field experiences, have shown that such an ad hoc infrastructure could be easily deployed by simply enabling vehicles and human-carried radio devices to act as switching nodes of a meshed network, in addition to their ability to provide one hop connectivity to InfoSpots and Access Points. The term Opportunistic Networks is often adopted to identify this type of mobile networks that provide short range radio connectivity within a localized area (e.g. a city's zone, campus or mall).

Opportunistic networks are delay tolerant networks in which nodes establish extemporaneous wireless connections for packet forwarding by exploiting the relay opportunity of another radio device in range. If devices are not available in the neighborhood, the packet is cached locally waiting for a new possibility of forwarding that mobility will eventually offer.

This is an emerging research area and a very promising technology to support ubiquitous computing. However, to make this happen, a great research effort is still required to design flexible, robust and efficient inter-node communication mechanisms.

CARTOON will focus on the design of innovative network and overlay protocols. To address the efficiency and flexibility requirements, CARTOON will design context-sensitive protocols, that is, protocols that consider information coming from the local resource manager and from other devices in range, in addition to the information coming from upper and lower layers. In this emerging scenario, the research will provide three main contributions:

  1. the design and analysis of novel protocols and algorithms to cover the functional needs of the network and overlay layers;
  2. a general simulation tool for opportunistic networks, obtained as an enhancement of an existing simulation environment (e.g. ns2, OMNeT++ or GloMoSim), to be released to the research community;
  3. the system analysis and architectural specifications of a CARTOON-based mobile device that clasp this research with the next R&D phase in which the CARTOON prototypes will be experimented in a non simulated environment.



Supported by:

The project is funded by the Italian Ministry for Instruction, University and Research (MIUR) for the years 2006-2008.


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Last Updated on Thursday, 18 February 2010 16:55