This work considers an Industry 4.0 scenario, where many heterogeneous sensors must communicate their data to a central factory management function. Unlike the general trend in the current literature, where wireless sensor networks (WSNs) are assumed to have homogeneous quality of service (QoS), we address the more challenging scenario where each sensor node has a different set of reliability and latency requirements to fulfill. Accordingly, a QoS-aware wireless sensor network (QAW) routing protocol is proposed to satisfy the different QoS requirements by each sensor node, while maximizing the network lifetime, thanks to a novel WSN hierarchical structure. The proposed QAW protocol accounts for the total energy of the nodes and their respective QoS requirements when establishing the routing structure. Periodical updates are proposed to guarantee an optimized network lifetime. Simulation experiments show that the proposed QAW protocol is able to enforce the desired QoS significantly better than the state-of-the-art approaches, while it rivals them in terms of energy consumption and preserves network lifetime. The presented results further confirm benefit of multi-hop WSN structure in improving network lifetime, when compared with single-hop sensor networks that minimize latency even when it is not strictly necessary.
QoS-Aware Wireless Sensor Networks: Reliability and Low-Latency for Heterogeneous Industry 4.0
01.04.2021
1433191 byte
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
Power-Aware Metrics for Wireless Sensor Networks
British Library Online Contents | 2004
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