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Time synchronization in hierarchical TESLA wireless sensor networks

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2 Author(s)
Jason L. Wright ; Idaho National Laboratory, 2525 Freemont Avenue, Idaho Falls, 83415, USA ; Milos Manic

Time synchronization and event time correlation are important in wireless sensor networks. In particular, time is used to create a sequence events or time line to answer questions of cause and effect. Time is also used as a basis for determining the freshness of received packets and the validity of cryptographic certificates. This paper presents secure method of time synchronization and event time correlation for TESLA-based hierarchical wireless sensor networks. The method demonstrates that events in a TESLA network can be accurately timestamped by adding only a few pieces of data to the existing protocol.

Published in:

Resilient Control Systems, 2009. ISRCS '09. 2nd International Symposium on

Date of Conference:

11-13 Aug. 2009