Harms, LauraLauraHarmsLandsiedel, OlafOlafLandsiedel2025-02-052025-02-052023-06Proceedings - 19th International Conference on Distributed Computing in Smart Systems and the Internet of Things, DCOSS-IoT 2023: 187-195https://hdl.handle.net/11420/53825Bluetooth Low Energy (BLE) is the prevalent communication protocol for the Internet of Things. However, for time-critical applications requiring time-synchronized multi-hop networks with often multiple node exchanging data at the same time slot, BLE lacks a solution. Instead, we commonly see IEEE 802.15.4 being used with its Time-Slotted Channel Hopping (TSCH) MAC layer. In this work, we build TBLE, which brings the established TSCH protocol to BLE, enabling BLE to be used for time-synchronized routed mesh communication. We show that in experimental testbed deployments, TBLE achieves similar performance to TSCH, with the possibility for lower average latencies of up to 20%. Moreover, due to the higher spectral efficiency of BLE compared with IEEE 802.15.4 (40 vs. 16 channels), more parallel routed communications are possible with TBLE, further reducing latency and increasing throughput.en802.15.4BLEBluetooth Low EnergyInternet of ThingsIoTTime Slotted Channel HoppingTSCHTechnology::600: TechnologyConference Paper10.1109/DCOSS-IoT58021.2023.00041Conference Paper