Experimental Evaluation of Low-Latency Diversity Modes in IEEE 802.15.4 Networks
Brian G. Kilberg, Craig B. Schindler, Arvind Sundararajan, Alex Yang, Kristofer S. J. Pister · 2018
Wireless sensor networks for factory automation and control will require strict latency and reliability requirements on the order of 1 millisecond end-to-end latency and 10-9total packet error rate. Current wireless sensor networks can achieve up to nine nines (10-9total packet error rate) of reliability, but without tight latency bounds. In order to meet these requirements, wireless sensor networks will require effective modes of network diversity that are also compatible with low-latency time scales. We evaluated the efficacy of time, space, and frequency diversity in cooperative IEEE 802.15.4 wireless networks. We demonstrated a wireless sensor network topology that achieved 99.99999% of reliability bounded by a worst case end - to-end latency of 3 milliseconds.