| Publisher | Purdue University | ||
|---|---|---|---|
| Format | 495.3KB PDF | Date added | 27 Nov 2006 |
| Topics | Monitoring Systems | ||
| Downloads | 4 | ||
This paper presents a hierarchical approach for detecting faults in Wireless Sensor Networks (WSNs) after they have been deployed. The developers of WSNs can specify "Invariants" that must be satisfied by the WSNs. It presents a framework, Hierarchical SEnsor Network Debugging (H- SEND), for lightweight checking of invariants. H-SEND is able to detect a large class of faults in data gathering WSNs and leverages the existing message flow in the network by buffering and piggybacking messages. H-SEND checks as closely to the source of a fault as possible, pinpointing the fault quickly and efficiently in terms of additional network traffic. Therefore, H-SEND is suited to bandwidth or communication energy constrained networks.
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