Deployment of Hybrid Sensor Networks

Speaker: Chun Tung ChouSchool of Computer Science and Engineering, University of New South Wales, Australia http://www.cse.unsw.edu.au/~ctchou/ABSTRACT:This talk will present the problem of network deployment in hybrid sensor networks, consisting of both resource-rich and resource-impoverished sensor devices. The resource-rich devices, called microservers, are more expensive but have significantly greater bandwidth and energy capabilities compared to the low-cost, low-powered sensors. Such hybrid sensor networks have the potential to support the higher bandwidth communications of broadband sensor networking applications, as well as the finegrained sensing that is made possible by smaller sensor devices. We propose several techniques to investigate some fundamental questions on hybrid sensor network deployment — for a given number of microservers, what is the maximum lifetime of a sensor network and the optimal microserver placement? What benefit can additional microservers add to the network, and how financially costeffective is it to introduce these microservers? In order to answer these questions, we formulate an integer programming model for hybrid sensor network deployment. Our studies show that network life time can be extended by more than 100% by adding an extra microserver to the network; the network life time of optimized microservers' placement can be nine times longer than the worst case life time. Scalability analysis shows that the cost-effectiveness of hybrid sensor networks improves with the size of the network.HOST: Bhaskar Krishnamachari ** bkrishna@usc.edu

Location: Hedco Pertroleum and Chemical Engineering Building (HED) - CO AUDITORIUM

Audiences: Everyone Is Invited

Contact: Irina Strelnik