MQTT QoS Benchmarking Dataset: End-to-End Latency Telemetry from a 10-Node IoT-XR Testbed under IEEE 802.11g Saturation

Raw end-to-end latency telemetry collected from a 10-node IoT-XR cyber-physical testbed under IEEE 802.11g network saturation. Each CSV file corresponds to one MQTT Quality of Service level (QoS 0, QoS 1, QoS 2) and contains per-packet measurements including round-trip latency (µs), subscriber timestamps (ns), elapsed time (ns), and XR engine frame rate (FPS). Data was collected over 600-second sessions at 100 Hz per node (1,000 msg/s aggregate), across 30 trial repetitions. Used in the empirical analysis reported in: Dias, J.A., Campos, N., Boavida, M.