posted Jul 30, 2018, 9:33 PM by MUHAMMAD MUN`IM AHMAD ZABIDI
[
updated Aug 8, 2018, 6:20 AM
]
Parameters
|
LoRa |
NB-IoT |
| Spectrum |
Unlicensed |
Licensed LTE
|
Spectrum cost
|
Free |
> $500 million/MHz
|
| Modulation |
CSS |
QPSK |
| Bandwidth |
500-125 kHz
|
180 kHz
|
Peak data rate
|
290 - 50 kpbs (DL/UL)
|
DL: 234.7 kbps; UL: 204.8 kbps
|
Link budget
|
154 dB
|
150 dB
|
Max #message/day
|
Unlimited |
Unlimited |
| Duplex? |
Full duplex |
Half duplex
|
Power efficiency
|
Very high
|
Medium high
|
Spectrum efficiency
|
Chip SS CDMA better than FSK
|
Improved by standalone, in-band, guard band operation
|
Area traffic capacity
|
Depends on gateway
|
40 devices per household, ~55k devices per cell
|
Inteference immunity
|
Very high
|
Low
|
| Peak current
|
32 mA
|
120-300 mA |
| Sleep current |
1 μA |
5 μA
|
| Standardization |
De-facto standard
|
3GPP Rel. 13 (planned)
|
- Sinha, R. S., Wei, Y., & Hwang, S.-H. (2017). A survey on LPWA technology: LoRa and NB-IoT. ICT Express, 3(1), 14–21. https://doi.org/10.1016/J.ICTE.2017.03.004
|
|
