MSU-TSCH: A Mobile Scheduling Updated Algorithm for TSCH in the Internet of Things

Abstract

On top of the low-power IEEE 802.15.4 radio, IEEE created IEEE 802.15.4e time slotted channel hopping (TSCH), an exceptionally efficient, reliable, and predictable time-frequency enabled medium access control (MAC) protocol for the industrial sector. However, the IEEE 802.15.4e TSCH specification does not address how scheduling would be created, updated, or maintained. Moreover, TSCH does not support mobility. Although several scheduling techniques have been proposed in the literature to fill this gap, these techniques did not consider networking metrics such as duty cycle, network capacity, end-to-end delay, and packet delivery ratio. In this paper, we develop a new dynamic scheduling approach for TSCH that supports mobility and adapts to topology changes, called mobile scheduling updated TSCH (MSU-TSCH). attempts to schedule time slots by first picking the closest nodes to the sink. We undertake comprehensive simulations to assess the effectiveness of MSU-TSCH with PRCOS, an existing scheduling algorithm in a mobile context. This proposal reduces the received energy consumption by up to 40%, on the other hand, it decreases the average end-to-end latency by 30%.