TL;DR
This paper introduces a Layer-2 slicing method using 6TiSCH tracks to isolate SDN control traffic in industrial IoT networks, ensuring deterministic, low-latency control communication and preventing interference with data flows.
Contribution
It proposes a novel use of 6TiSCH tracks to isolate SDN control traffic, improving performance and determinism in constrained IoT networks.
Findings
Tracks effectively isolate SDN control traffic from data flows.
Network slicing reduces SDN overhead impact on application performance.
Deterministic, low-latency SDN communication is achievable with tracks.
Abstract
Recent standardization efforts in IEEE 802.15.4-2015 Time Scheduled Channel Hopping (TSCH) and the IETF 6TiSCH Working Group (WG), aim to provide deterministic communications and efficient allocation of resources across constrained Internet of Things (IoT) networks, particularly in Industrial IoT (IIoT) scenarios. Within 6TiSCH, Software Defined Networking (SDN) has been identified as means of providing centralized control in a number of key situations. However, implementing a centralized SDN architecture in a Low Power and Lossy Network (LLN) faces considerable challenges: not only is controller traffic subject to jitter due to unreliable links and network contention, but the overhead generated by SDN can severely affect the performance of other traffic. This paper proposes using 6TiSCH tracks, a Layer-2 slicing mechanism for creating dedicated forwarding paths across TSCH networks, in…
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