LPWAN - Low Power Wide Area Network
NB-IoT - Narrow Band Internet of Thing
PSM - Power Saving Mode
TAU - Tracking Area Update
DRX - Discontinuous Reception
eDRX - Extended Discontinuous Reception
eMTC - ehanced Machine Type Communication
PSM和eDRX介绍文章：《下一代物联网技术：原来NB-IoT与eMTC的低功耗技术是这样实现的》
| LTE Cat 1 | LTE Cat 0 | LTE Cat M1
(eMTC) | LTE Cat NB1
(NB-IoT) | EC-GSM-IoT | |
|---|---|---|---|---|---|
| 3GPP Release | Release 8 | Release 12 | Release 13 | Release 13 | Release 13 |
| Downlink Peak Rate | 10 Mbit/s | 1 Mbit/s | 1 Mbit/s | 250 kbit/s | 474 kbit/s (EDGE)
2 Mbit/s (EGPRS2B) |
| Uplink Peak Rate | 5 Mbit/s | 1 Mbit/s | 1 Mbit/s | 250 kbit/s (multi-tone)
20 kbit/s (single-tone) |
474 kbit/s (EDGE)
2 Mbit/s (EGPRS2B) |
| Latency | 50-100ms | not deployed | 10ms-15ms | 1.6s-10s | 700ms-2s |
| Number of Antennas | 2 | 1 | 1 | 1 | 1-2 |
| Duplex Mode | Full Duplex | Full or Half Duplex | Full or Half Duplex | Half Duplex | Half Duplex |
| Device Receive Bandwidth | 1.08 - 18 MHz | 1.08 - 18 MHz | 1.08 MHz | 180 kHz | 200 kHz |
| Receiver Chains | 2 (MIMO) | 1 (SISO) | 1 (SISO) | 1 (SISO) | 1-2 |
| Device Transmit Power | 23 dBm | 23 dBm | 20 / 23 dBm | 20 / 23 dBm | 23 / 33 dBm |
原文：http://www.cnblogs.com/arnoldlu/p/7904242.html