A queue-based scheduling algorithm for PCE-enabled Industrial Internet of Things networks

The rise of the Industrial Internet of Things as a new paradigm for instrumentation and control has brought the use of internet-enabled constrained devices to complement and replace standard wired networks with wireless connectivity reducing deployment and maintenance costs. This work has been supported by the development of several industry standards, such as ISA100.11a, WirelessHART, 802.15.4e and the current 6TiSCH WG, to enable IPV6 for Time-Scheduled Channel Hopping (TSCH) networks. The most relevant features of TSCH networks are the intrinsic robustness and predictable delay, given a predefined schedule. In this paper, we propose a PCE-enabled scheduling approach to distribute cells within the slotframe by queueing the cell requirements derived from a number of different RPL DODAGs.