Abstract
This paper presents the essence of IoT (Internet of Things) works and design challenges, discusses its principles of operation, and presents IoT development concepts. WSN (Wireless Sensor Network) was characterized in detail as an essential component of IoT infrastructure. The various faults that can occur at all levels of the IoT architecture, such as sensor nodes, actuators, network links, as well as processing and storage components clearly demonstrate that fault-tolerance (FT) has become a key issue for IoT systems. A properly applied routing algorithm has a direct impact on the power consumption of sensors, which in extreme cases is the reason why nodes shut down due to battery degradation. To study the fault tolerance of IoT infrastructure, a ZigBee network topology was created, and various node failure scenarios were simulated. Furthermore, the results presented showed the impact and importance of choosing the right routing scheme, based on the correlation of throughput to the number of rejected packets, as well as the proportionality of the value of management traffic to the other including the ratio of rejected packets.
Highlights
Today’s technologies are developing very fast and many of the newly developed solutions minimize or even exclude human intervention, especially in Internet of Things (IoT) infrastructures
The ZigBee network topology was created and different configurations were implemented in which various node failure scenarios were simulated to show its robustness to node and adjacent links failures
This paper addresses the topic of modeling and fault tolerance analysis of selected IoT network protocol, in order to evaluate the protocol for different failure scenarios assuming the failure of various IoT network nodes
Summary
Today’s technologies are developing very fast and many of the newly developed solutions minimize or even exclude human intervention, especially in IoT infrastructures. The purpose of the simulations and analysis presented here is to model the operation and fault tolerance capabilities of an IoT network based on one of the most popular communication protocols, which is the ZigBee protocol. Failure to match the routing algorithm will increase the packet traffic, limiting the network performance but more importantly will increase the energy consumption of the nodes, which will translate into a reduction in their operating time, shutting them down.
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