---
# System prepended metadata

title: LPWAN (NB-IoT)
tags: [tech]

---

---
title: 'LPWAN (NB-IoT)'
disqus: hackmd
tags: tech
---

NB-IoT
===

[toc]

## Chunghwa Telecom (CHT)

* Contact (sales): 林慧莉 Alice Lin +886 2 3343 7815 (lin9531@cht.com.tw)
* APN: internet.iot
* Operation Frequency: B8 (900MHz)

| NB-IoT Band | Uplink Band  | Downlink Band | Bandwidth | Duplex Mode |
| ------------| -------------| ------------- |-----------|-------------|
| B8          | 880 - 915 MHz| 925 - 960 MHz | 25 MHz    | HD-FDD      |


## Far EasTone Telecom (FET)

* Contact:
* APN: nbiot
* Operation Frequency:  


## Taiwan Mobile (TWM)

* Contact:
* APN: twm.nbiot
* Operation Frequency:  


## Technical Parameters

* **Half duplex**
![Half duplex](https://www.avsystem.com/media/what-is-narrowband-iot_8new.png)
* **LTE Cat-NB1 vs. LTE Cat-NB2**

|                        | LTE Cat-NB1 | LTE Cat-NB2  |
| -----------------------| --------    | -------------|
| Max Downlink TBS       | 680 bits    | 2536 bits    |
| Max Downlink Data Rate | ~26 kbps    | ~80/127 kbps |
| Max Uplink TBS         | 1000 bits   | 2536 bits    |
| Max Uplink Data Rate   | ~62 kbps    | ~105/159 kbps|
| Positioning            | Cell ID     | OTDOA, E-CID |


## Paper(s)

https://www.sciencedirect.com/science/article/pii/S1110016820303598