BurstProbe: debugging time-critical data delivery in wireless sensor networks

Authors:
James Brown;Ben McCarthy;Utz Roedig;Thiemo Voigt;Cormac J. Sreenan
Affiliations:
Lancaster University, UK;Lancaster University, UK;Lancaster University, UK;Swedish Institute of Computer Science, Sweden;University College Cork, Ireland
Venue:
EWSN'11 Proceedings of the 8th European conference on Wireless sensor networks
Year:
2011

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Abstract

In this paper we present BurstProbe, a new technique to accurately measure link burstiness in a wireless sensor network employed for time-critical data delivery. Measurement relies on shared probing slots that are embedded in the transmission schedule and used by nodes to assess link burstiness over time. The acquired link burstiness information can be stored in the node's flash memory and relied upon to diagnose transmission problems when missed deadlines occur. Thus, accurate diagnosis is achieved in a distributed manner and without the overhead of transmitting rich measurement data to a central collection point. For the purpose of evaluation we have implemented BurstProbe in the GinMAC WSN protocol and we are able to demonstrate it is an accurate tool to debug time-critical data delivery. In addition, we analyze the cost of implementing BurstProbe and investigate its effectiveness.