A proposal for enhancement towards bidirectional quasi-deterministic communications using IEEE 802.15.4

The IEEE 802.15.4e amendment provides different ways over which Wireless Sensor Networks (WSNs) can be deployed, even with strict requirements in terms of latency and determinism; still, there seems to be room for improvement. This paper proposes an enhancement for IEEE 802.15.4e LLDN mode, focusing on the worst-case latency for high-priority traffic. An analytical comparison with standard LLDN is then performed and evaluated.