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Wireless Sensor Networks

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Wireless Sensor Networks

Wireless sensor networks represent one of the main research field of D.GT group and, in particular, of the SIGNET lab. The research activity in this context is widespread and spans both theoretical analysis and implementation issues.

A summary of our activities follows:

  1. Synapse: wireless reprogramming: please see the description on the Wireless Sensor Networks web page of this site
  2. Localization: Self-localization is still an open problem, especially for indoor environments. We tackled the problem from an analytical, simulation and implementation approach. In particular, we have collected a large number of measurements to develop a suitable model, focusing on Received Signal Strength Indication. Then, we studied some range-based and range-free localization algorithms, both theoretically and via simulations. Some techniques have also been tested on the SIGNET testbed. Furthermore, we considered the issue of optimal beacons positioning, in order to maximize localization performance. We are now developing a framework for Opportunistic Localization, in which mobile and heterogeneous devices cooperate on an opportunistic base to improve their location estimate.
  1. Testbed: A permanent wireless sensor network (WSN) testbed including 48 nodes is deployed within the SIGNET lab, as part of a larger testbed made of about 350 nodes. The testbed and the software to manage it have partly been developed in the context of the WISE-WAI project (for more info on the SIGNET lab, visit the lab page).

Principal investigators

Michele Zorzi, Andrea Zanella, Michele Rossi, Paolo Casari, Nicola Bui, Francesco Zorzi, Angelo Castellani