Wireless Information Systems

Graduate Program in Telecom and Networking

School of Information Sciences

Wireless systems have become a vital infrastructure in today's society, and significant professional opportunities exist in this growing field. The Wireless Information Systems group in the Graduate Program in Telecommunications and Networking has created a state-of-the art curriculum, excellent lab facilities and a strong research component in this area. We teach the physical technology and enabling processes, systems that provide cellular telephony, wireless LANs, and sensor networks, and mobile applications. Graduates of the MST - Wireless Information Systems track have been hired by wireless carriers, manufacturers, and other organizations as system engineers and wireless network designers. Our Ph.D. graduates now teach in international universities.

Dynamic Spectrum Access

We are examining economic, policy, and technical issues in dynamic spectrum access. The question we are addressing primarily considers what would make secondary use of a licensed piece of spectrum viable? Why and under what conditions (at a system level) would it make sense to become a secondary user of spectrum where a primary user already exists? These conditions span a broad "spectrum" ranging from technical feasibility (e.g., spatio temporal availability of spectrum holes, QoS requirements of an application) to regulatory issues and the economics of secondary use.
Please see this summary for our recent NSF funded project.

Wireless Network Virtualization

When virtualization is applied to wireless networks, things quickly become complicated. Wireless network virtualization includes both infrastructure sharing and spectrum sharing. There are many different topologies for wireless networks, different spectrum bands, different geographic coverage and different mobility requirements. When wireless networks are deployed, the interference that is caused within an administrative unit and across administrative units becomes important. Lastly, it is worth noting that governments heavily regulate the basic resource of spectrum and how it can be used. We are investigating several aspects of wireless network virtualization.

Secure and Robust Wireless Networks

Deployment of infrastructure and mobile ad-hoc wireless networks in both urban and remote settings is of great importance to the success of tactical missions. It is imperative to take into account security, robustness, and performance, as well as the trade-off relationships between them. The effect of an attack at a specific layer can spread to other layers. Our goal is to provide an architecture that can adapt to the services desired, with the right trade-off between performance, security, and fault tolerance, providing resilience to both attacks and environmental factors, and taking in considerations the interactions and dependencies of different layers.