I will present some results concerning how we can schedule queries in a sensor network when there is a cost (say, energy) associated with each query. In this setting, how do we make good choices about when to query subject to delay or data staleness limitations? This work provides some guidelines for how to make the tradeoff between delaying the query frequency, which affects energy consumption and data staleness. Starting with the case when all sensors are identical, the talk will also explore the case when there may be two types of sensors: one which is inexpensive to query but may not yield sufficient information and the other which is more expensive to query and provides better information.Bio:
Sathish Gopalakrishnan is an Assistant Professor in the Department of Electrical & Computer Engineering at The University of British Columbia. He works, broadly, in the area of real-time and dependable systems, and believes that good theory enables pragmatic engineering design choices. He has received awards for his publications from the IEEE Industrial Electronics Society (2008) and at the IEEE Real-Time Systems Symposium (2004). He has been responsible for the web presence of the IEEE Technical Committee on Real-Time Systems since 2008 and is open to suggestions for how to effectively promote the activities of IEEE TCRTS.