• Clustering
• Routing
• Underwater Wireless Sensor Networks

One of the common ways to achieve scalability in a Wireless Sensor Network is that of "simplifying" the network topology, i.e., that of selecting a smaller number of nodes and of links to do most of the job for the entire network.
A typical way of node selection is that of giving the network a hierarchical organization, i.e., grouping nodes into "clustering" and interconnecting the clusters into a connected backbone, namely, the simplified topology. These processes go usually under the names of clustering and backbone formation.

Routing for wireless ad hoc and sensor networks is perhaps the most investigated research issue in the general area of ad hoc networking. Focusing on Wireless Sensor Networks (WSNs), where devices are limited in their energy, computation, and communication capabilities and where the network is characterized by high dynamics, such as node addition, node removal and the mobility of some of the network nodes, the problem becomes more challenging and interesting. New solutions have to be designed in order to meet the specific WSNs requirements.

The Earth is a water planet. For decades, there have been significant interests in monitoring aquatic environments for scientific exploration, commercial exploitation and coastline protection. Recently, sensor networks have emerged as a very powerful technique for many applications, including monitoring, measurement, surveillance and control. The idea of applying sensor networks into underwater environments (i.e., forming underwater sensor networks) has received increasing interests. Although there exist many recently developed network protocols for terrestrial wireless sensor networks, the unique characteristics of the underwater acoustic communication channel, such as limited bandwidth capacity and variable delays, require for very efficient and reliable new data communication protocols.

Please refer to the Research Activity webpage of the UWSN Group for a more detailed description of my current research in Underwater Wireless Sensor Networks.