Low-power wide area networks (LPWANs) has recently emerged as a popular long-range and low-speed radio communication technology as a result of the important growth of the Internet of Things (IoT) market. In fact, LoRa, Sigfox and NB-IoT are the three major LPWAN technologies which compete for IoT deployment. In this manuscript, we analyze and compare these technologies. The latter are efficiently applied to intelligent, autonomous and heterogeneous devices. Within this framework, 5G networks have to be used to guarantee full connectivity in the IoTnetworks. To evaluate the IoT collection networks behavior, a set of experiments were conducted on real testbeds using wifi and zigbee technologies in an indoor environment.