Clock Synchronization with Exponential Smoothing for Dynamic Networks
Sirajo Abdullahi Bakura, Alain Lambert, Thomas V. Nowak · 2020
We propose a new clock synchronization algorithm based on temporal exponential smoothing of the correction terms. Our algorithm only sends zero-bit pulses over the network and is thus usable in the first steps of establishing mobile ad-hoc networks (MANETs). Moreover, we show that the algorithm is able to tolerate significant network changes during operation. We develop an automatic and adaptive selection procedure for choosing the exponential decay term in our algorithm. The proposed algorithm is evaluated via simulation in vehicular ad-hoc networks (VANETs), which require clock synchronization to deliver services such as emergency interventions to avoid collisions. Our simulations in both dynamic and static configurations show improvement over previous algorithms in terms of reducing clock offset and drift.