1, narrow spectrum: 200kHz;
2, the terminal transmitting narrowband signal increases the power spectral density of the signal, increases the coverage gain of the signal, and improves the efficiency of spectrum utilization;
3, the same packet repeat transmission can also obtain better coverage gain;
4, in addition, the technology reduces the activation ratio of the terminal, reducing the complexity of the terminal baseband;
5, NB-IoT four capabilities: wide coverage, mass connection, lower power consumption, lower chip cost; 6, NB-IoT based on the existing cellular network technology, can upgrade the current network to quickly support the industry market demand, become the fourth mode on the Gul network.