Este artigo foi apresentado no evento International Symposium on Performance Evaluation of Computer and Telecommunication Systems (SPECTS), 2018

Abstract: The Internet of Things will connect a large number of devices to the Internet. One of the most critical components of an IoT network is the network mediator, as it is a traffic concentrator. Therefore, the growth of such networks is largely dependent upon its capacity. In order to...

Abstract: The Internet of Things will connect a large number of devices to the Internet. One of the most critical components of an IoT network is the network mediator, as it is a traffic concentrator. Therefore, the growth of such networks is largely dependent upon its capacity. In order to establish such limits, in this work we present a simulation model and the performance analysis of the traffic generated by devices connected by the IoT, aiming at dimensioning the capacity of an IoT mediator. The simulation model is based on both discrete event and Random Waypoint simulation for an AdHoc network that accommodates clusters and the effects of mote mobility. We analyze through a case study the mean-queuing time and the CPU utilization for the cluster-heads (i.e. output CPU) in each cluster, given the probability of connectivity of the motes resulting from their mobility and transmission power. Through the model, it is possible to estimate the incoming and the outgoing traffic for each cluster and for the IoT mediator. The proposed simulation model is general in that it captures a number of features of complex IoT systems, including the mediator, gateways, emergency nodes, Internet connections and also distinct types of IoT traffic such as the one generated by RFID tags and sensor systems

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