Wireless sensor networks operate under light load and then suddenlybecome active in response to detected or monitored events. Thisresults in potentially large, sudden, correlated impulses of databeing generated by the sensor field that must be delivered to asmall set of sinks without significantly disrupting the fidelityof sensing applications. We observe that it is during theseimpulse periods that congestion is likely and the information beingtransported of most importance - and therefore most likely to be lost.We believe that without solving this congestion problem thewide-scale adoption of self-organizing sensor network technologycould be jeopardized. In this talk, we will discuss this problemand detail one solution for alleviating it called CODA(COngestion Detection and Avoidance).
Andrew T. Campbell is an Associate Professor of Electrical Engineering atColumbia University and a member of the COMET Group. Andrew is working onemerging architectures and programmability for wireless networks. Hereceived his PhD in Computer Science in 1996, and the NSF CAREER Award forhis research in programmable mobile networking in 1999. Currently, he is onsabbatical as a UK EPSRC Visiting Fellow at the Computer Lab, CambridgeUniversity.