NB-IoT
Last updated
Last updated
Defined in R13, another mode instead of LTE-M.
Bandwidth – 200KHz.
One resource block in GSM/LTE.
Based in LTE protocol, stripped down.
OFDMA(down)/FDMA(up), QPSK.
200kbps (down)/20kbps(up).
Three modes of operation.
Uses LTE design extensively.
Lower cost in terms of channel utilization.
Extended coverage.
Low Receiver sensitivity = -141 dBm.
Long battery life: 10 years with 5 Watt Hour battery (depending on traffic and coverage needs).
Support for a massive number of devices: at least 50.000 per cell.
3 modes of operation:
Stand-alone: stand-alone carrier, e.g. spectrum currently used by GERAN (GSM Edge Radio Access Network) systems as a replacement of one or more GSM carriers.
Guard band: unused resource blocks within an LTE carrier’s guard-band.
In-band: resource blocks within a normal LTE carrier.