1, illiquidity, large amount of data (uplink) and wide frequency band, such as city surveillance cameras.
2. Strong mobility, frequent switching and small amount of fleet tracking management data.
3, no mobility, small amount of data, insensitive to meter reading and other delays.
NB-IoT is produced to meet the needs of the third kind of Internet of Things devices, that is, it is suitable for application scenarios with no mobility, small data volume and insensitivity to delay.
Enhanced coverage (enhanced by 20dB).
Support large-scale connection, 100K terminal /200KHz battery.
Ultra-low power consumption, battery life 10 years.
Ultra low cost.
Minimize signaling overhead, especially air interface.
Ensure the security of the whole system (including the core network).
Support IP and non-IP data transmission.
Support SMS (optional deployment).
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