In general, other networks such as LoRa and Sigfox are also still in their build-up. NB-IoT has the advantage of being able to use existing LTE base stations, which will allow for sufficiently dense network with good indoor penetration, especially in urban regions.
Deep indoor penetration is enabled by robust narrowband modulation techniques and redundancy (repetitions of transmissions). Dependent on the coverage situation of the device three different Coverage Extension levels (CE0, CE1, CE2), can be used. The higher the CE level the…
more repetitions of the transmitting signal
higher the power consumption of the device
lower the throughput
higher the latency