Time synchronization for predictable and secure data collection in wireless sensor networks
Shujuan Chen, Adam Dunkels, Fredrik Österlind, Thiemo Voigt, Mikael Johansson · 2007
Abstract — Wireless sensor networks are trying to find their way from relatively undemanding applications such as environmental monitoring to applications such as industrial control, which have stronger requirements in terms of security and predictability. Predictability cannot be achieved without coordination and the coordination of distributed entities and events requires time synchronization. Towards this end, we present a secure time synchronization service, that as our experimental results show does not degrade time synchronization accuracy. Based on the time synchronization service we implement time slotted data collection and present results that show that this way we can provide a predictable data collection service. I.