Experimental evaluation of pulse-coupled oscillator synchronization in IEEE 802.15.4 networks
Wasif Masood, Johannes Klinglmayr, Christian Bettstetter · 2014
A distributed synchronization protocol based on the theory of pulse-coupled oscillators and timestamps is proposed, implemented on IEEE 802.15.4 compatible Z1 devices, and evaluated in a multihop wireless sensor network. The protocol is robust against the stochastic nature of the wireless channel and provides compensations against random delays. Results show convergence within a few cycles to a synchronization precision of a few hundred microseconds without casting off the control overhead. The performance is compared to that of the standard implementation of the Flooding Time Synchronization Protocol (FTSP).