Simulation Model of Functioning of a Low-Power Wireless Network
DOI:
https://doi.org/10.52575/2687-0932-2023-50-3-645-654Keywords:
IoT, wireless network, LoRaWAN, simulation model, Matlab, Simulink, power consumption, end devicesAbstract
A simulation model of the operation of a wireless network designed to collect data from multiple sensors is presented. It is assumed that the terminal devices of the network are equipped with battery power supplies that provide autonomous operation of the nodes for a long time. The schemes and features of modeling the operation of terminal devices and the gateway, as well as estimating the amount of energy consumption in the process of data transmission by network nodes are shown. Minimization of power consumption at the output of the transmitting modules of terminal devices is achieved by setting the recommended values of the output power and the spectrum spreading factor, depending on the current level of signal attenuation during the transmission of information frames. These recommended values are proposed to be calculated in the network server and transmitted to end devices in acknowledgment frames. As a result of applying the developed simulation model, it is possible to estimate the total power consumption of terminal devices when transmitting messages during a given time interval.
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