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Article

Parent and PHY Selection in Slot Bonding IEEE 802.15.4e TSCH Networks

1
Internet Technology and Data Science Lab, University of Antwerp—imec, 2000 Antwerp, Belgium
2
Internet Technology and Data Science Lab, Ghent University—imec, 9000 Ghent, Belgium
3
AI-Driven Systems, i2CAT Foundation, 08034 Barcelona, Spain
*
Author to whom correspondence should be addressed.
Academic Editor: Leon Rothkrantz
Sensors 2021, 21(15), 5150; https://doi.org/10.3390/s21155150
Received: 17 June 2021 / Revised: 18 July 2021 / Accepted: 25 July 2021 / Published: 29 July 2021
(This article belongs to the Section Intelligent Sensors)
While IEEE 802.15.4e Time-Slotted Channel Hopping (TSCH) networks should be equipped to deal with the hard wireless challenges of industrial environments, the sensor networks are often still limited by the characteristics of the used physical (PHY) layer. Therefore, the TSCH community has recently started shifting research efforts to the support of multiple PHY layers, to overcome this limitation. On the one hand, integrating such multi-PHY support implies dealing with the PHY characteristics to fit the resource allocation in the TSCH schedule, and on the other hand, defining policies on how to select the appropriate PHY for each network link. As such, first a heuristic is proposed that is a step towards a distributed PHY and parent selection mechanism for slot bonding multi-PHY TSCH sensor networks. Additionally, a proposal on how this heuristic can be implemented in the IPv6 over the TSCH mode of IEEE 802.15.4e (6TiSCH) protocol stack and its Routing Protocol for Low-power and Lossy network (RPL) layer is also presented. Slot bonding allows the creation of different-sized bonded slots with a duration adapted to the data rate of each chosen PHY. Afterwards, a TSCH slot bonding implementation is proposed in the latest version of the Contiki-NG Industrial Internet of Things (IIoT) operating system. Subsequently, via extensive simulation results, and by deploying the slot bonding implementation on a real sensor node testbed, it is shown that the computationally efficient parent and PHY selection mechanism approximates the packet delivery ratio (PDR) results of a near-optimal, but computationally complex, centralized scheduler. View Full-Text
Keywords: TSCH; slot bonding; multi-PHY; PHY selection; parent selection; routing; Contiki implementation TSCH; slot bonding; multi-PHY; PHY selection; parent selection; routing; Contiki implementation
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MDPI and ACS Style

Daneels, G.; Van Leemput, D.; Delgado, C.; De Poorter, E.; Latré, S.; Famaey, J. Parent and PHY Selection in Slot Bonding IEEE 802.15.4e TSCH Networks. Sensors 2021, 21, 5150. https://doi.org/10.3390/s21155150

AMA Style

Daneels G, Van Leemput D, Delgado C, De Poorter E, Latré S, Famaey J. Parent and PHY Selection in Slot Bonding IEEE 802.15.4e TSCH Networks. Sensors. 2021; 21(15):5150. https://doi.org/10.3390/s21155150

Chicago/Turabian Style

Daneels, Glenn, Dries Van Leemput, Carmen Delgado, Eli De Poorter, Steven Latré, and Jeroen Famaey. 2021. "Parent and PHY Selection in Slot Bonding IEEE 802.15.4e TSCH Networks" Sensors 21, no. 15: 5150. https://doi.org/10.3390/s21155150

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