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Thorough Performance Evaluation & Analysis of the 6TiSCH Minimal Scheduling Function (MSF)

Abstract : IEEE Std 802.15.4-2015 Time Slotted Channel Hopping (TSCH) is the de facto Medium Access Control (MAC) mechanism for industrial applications. It renders communications more resilient to interference by spreading them over the time (time-slotted) and the frequency (channel-hopping) domains. The 6TiSCH architecture bases itself on this new MAC layer to enable high reliability communication in Wireless Sensor Networks (WSNs). In particular, it manages the construction of a distributed communication schedule that continuously adapts to changes in the network. In this paper, we first provide a thorough description of the 6TiSCH architecture, the 6TiSCH Operation Sublayer (6top), and the Minimal Scheduling Function (MSF). We then study its behavior and reactivity from low to high traffic rates by employing the Python-based 6TiSCH simulator. Our performance evaluation results demonstrate that the convergence pattern of MSF is the root cause of the majority of packet losses observed in the network. We also show that MSF is prone to over-provisioning of the network resources, especially in the case of varying traffic load. We propose a mathematical model to predict the convergence pattern of MSF. Finally we investigate the impact of varying parameters on the behavior of the scheduling function.
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Contributor : Remous-Aris Koutsiamanis Connect in order to contact the contributor
Submitted on : Thursday, September 23, 2021 - 2:41:22 PM
Last modification on : Thursday, December 1, 2022 - 11:24:08 AM
Long-term archiving on: : Friday, December 24, 2021 - 8:52:21 PM


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David Hauweele, Remous-Aris Koutsiamanis, Bruno Quoitin, Georgios Papadopoulos. Thorough Performance Evaluation & Analysis of the 6TiSCH Minimal Scheduling Function (MSF). Journal of Signal Processing Systems, 2021, ⟨10.1007/s11265-021-01668-w⟩. ⟨hal-03352745⟩



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