NB-IOT技术.pdf
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仙风道骨刘憨憨
2025-05-06
duplex
I-DR
Extended
PSM
Rel.13
NB-IoT
Full
DL
800
In-band
1.7 MB
低功耗广域物联网模块
Jack
QQ：46970891
2
M2M/IoT连接分布
3
LPWAN技术比较
SIM800F
低功耗广域（LPWA）技术：主要NB-IoT、LoRa、Sigfox、RPMA，
其中，NB-IoT和LoRa最有发展前景，两者的主要区别是授权和非授权；
GSMA定义的移动物联网（Mobile IoT）：窄带物联网（NB-IoT）、
扩展覆盖GSM（EC-GSM-IoT）和机器类型通信（LTE-M）。
4
NB-IoT演进过程
SIM800F
SIM800F
5
国际标准化进展
SIM800F
SIM800F
6
LTE中低速率技术比较
Cat.1 Cat.0 Cat.M1 (eMTC) Cat.M2 (NB-IoT)
Bandwidth ≤ 20 MHz ≤ 20 MHz 1.4 MHz 200 KHz
Peak rate
10 Mbps DL, 5Mbps
UL
1Mbps DL,
1MbpsUL
1Mbps DL,
1MbpsUL
500 Kbps DL,500/40
multi/single-tone Kbps UL
Duplex mode Full duplex
Full duplex, Half
duplex type B
Full duplex, Half
duplex type B
Full duplex, Half duplex
type B
Deployment In-band In-band In-band
In-band / In-guard band /
Standalone
Coverage >140dB >140dB >155.7dB >164dB (standalone)
Reduced
power states
PSM (in Rel.12)
/Extended I-DRX (in
Rel.13)
PSM (in Rel.12)
/Extended I-DRX (in
Rel.13)
PSM / Extended I-
DRX (in Rel.13)
PSM / Extended I-DRX (in
Rel.13)
Mobility Full mobility Ful
duplex/I-DR/Extended/PSM/Rel.13/NB-IoT/Full/DL/800/In-band/
duplex/I-DR/Extended/PSM/Rel.13/NB-IoT/Full/DL/800/In-band/
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