Timing Deviations in Wireless Networks using Bluetooth Periodic Advertising
Timo Maiwald, Qing Zhang, Max Bartunik, Kilin Shi, Fabian Lurz, Georg Fischer, Thomas Ackermann · 2022 IEEE International Instrumentation and Measurement Technology Conference (I2MTC) · 2022
Monitoring and control systems, including spatially distributed devices, often require simultaneous responses to control commands. Especially when timing is crucial a synchronized connection between all devices is necessary to minimize differences in response time. This paper introduces a method which uses Bluetooth periodic advertising to establish a wireless synchronized multicast to simultaneously control devices. Results of time difference measurements between two devices, reacting on control commands received by the same periodic advertising packet, are introduced and discussed using large scale experimental data. Device configurations, where an impact on timing was experienced, are presented. Time difference values with a low maximum delay of 11 µs were achieved.