1. Stand-alone. A channel frequency with a width of 200 kHz is allocated. This method is most effective for NB-IoT, but it is also the most costly, because in this case you have to spend from 300 to 600 kHz of the width of the frequency spectrum, including guard intervals. But this method provides minimal negative impact on other communication technologies. 2. In-band. With this approach, the frequency range inside LTE (GSM signal) is allocated for transmitting NB-IoT packets, but the N ...