  Time Slotted Channel Hopping (TSCH) is a medium access protocol defined in
the IEEE 802.15.4 standard. It has been demonstrated to be one of the most
reliable options when it comes to industrial applications. TSCH offers a degree
of large flexibility and can be tailored to the requirements of specific
applications. Several performance aspects of TSCH have been investigated so
far, such as the energy consumption, the reliability, scalability and many
more. However, mobility in TSCH networks remains an aspect that has not been
thoroughly explored. In this paper we examine how TSCH performs under mobility
situations. We define two mobile scenarios: one where autonomous agriculture
vehicles move on a predefined trail, and a warehouse logistics scenario, where
autonomous robots/vehicles and workers move randomly. We examine how different
TSCH scheduling approaches perform on these mobility patterns and when
different number of nodes are operating. The results show that the current TSCH
scheduling approaches are not able to handle mobile scenarios efficiently.
Moreover, the results provide insights on how TSCH scheduling can be improved
for mobile applications.
