RapDAD: A Low Latency Desynchronization Approach for 6TiSCH-Based Asset Tracking Networks
Tengfei Chang, Osama Khan · IEEE Transactions on Industrial Informatics · 2025
6TiSCH is an internet engineering task force (IETF)-standardized protocol stack for industrial internet of things (IoT) applications. It employs time-slotted channel hopping (TSCH) in the MAC layer for robust reliability and ultra-low power consumption. By utilizing the RPL routing topology, the TSCH layer synchronizes devices across a network. However, in mobile scenarios, such as asset tracking, the RPL’s slow responsiveness delays device disconnection from the current network, hindering swift reconnection to a new network at a different location. To address this, a rapid mobility-aware method,RapDAD, is proposed in this article, functioning at the MAC layer. This method detects device cluster movement swiftly within a warehouse, bypassing reliance on RPL routing. The outcome demonstrates that a network comprising 100 6TiSCH devices can achieve disconnection within a mere 2 min upon root deactivation, simulating a transition from one location to another. This is a remarkable improvement compared to the original 10-h process of 6TiSCH network.