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

NB-IoT
===

[toc]

## Chunghwa Telecom (CHT)

* Contact (sales): 林慧莉 Alice Lin [phone] ([e-mail])
* 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**
* **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