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Seminar: ECE Faculty Candidate Monday Ramanuja Vedantham Network Protocols for Wireless Sensor and
Actor Networks A typical wireless sensor network
performs only one action: sensing the environment. Our requirement for
intelligent interaction with the environment has led to the emergence of
Wireless Sensor and Actor Networks (WSANs), where a group of sensors, actors
and a central coordination entity (sink) linked by wireless medium perform
distributed sensing and acting tasks. The evolution from WSNs, which can be
thought of to perform only read operations, to WSANs, which can perform both read
and write operations, introduces unique and new challenges that need to be
addressed. In this presentation, I address one such challenge called
"hazards", which is the out-of-order execution of queries and
commands by due to a lack of coordination between sensors, actors and the sink.
I identify three types of hazards and show with an example application, the
undesirable consequences of these hazards. I also enumerate the associated
challenges in a WSAN environment while addressing hazards. In this context, I
discuss the basic design needed to address this problem efficiently. I propose
a distributed and fully localized hazard-free approach that addresses the
problem and the associated challenges based on the design. Through analytical
studies, simulations and a prototype implementation, I study the performance of
the proposed solution and two baseline strategies, and show that the proposed
solution is efficient for a variety of network conditions. Biography: Ramanuja Vedantham is a Ph.D. Candidate
at The School of Electrical and Computer Engineering at Georgia Institute of
Technology. His research interests are in the areas of wireless sensor and
actor networks, and network protocols for multi-hop wireless networks. He
received his M.S. in Computer Science from The University of Texas at |
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