B O S T O N   U N I V E R S I T Y
                      Computer Science Department
                          C O L L O Q U I U M
                    Friday, January 23, 11:00 AM 
                       (Coffee served at 10:45 AM)
                         Seminar Room / MCS 135

          Balancing Energy Efficiency and Quality of Aggregate Data 
                           in Sensor Networks

                         Alexandros Labrinidis
                        University of Pittsburgh

                               Abstract


In-network aggregation has been proposed as one method for reducing
energy consumption in networked sensors.  In this talk, we present two
ideas to further reduce energy consumption in the context of in-network
aggregation. First by influencing the construction of the routing trees
for sensor networks to reduce the size of transmitted messages. Secondly
by imposing a hierarchy of output filters on the sensor network, while
maintaining the Quality of Data (QoD) above a certain, user-specified
threshold. We will describe the basic framework for both ideas and present
experimental results. Overall, these schemes provide significant energy
savings with neglibile drop in QoD.

Host: George Kollios

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