Wiki source code of Listen Before Talk Feature
Version 20.1 by Kilight Cao on 2023/08/30 11:47
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| author | version | line-number | content |
|---|---|---|---|
| 1 | **Table of Contents:** | ||
| 2 | |||
| 3 | {{toc/}} | ||
| 4 | |||
| 5 | |||
| 6 | = 1. Introduction = | ||
| 7 | |||
| 8 | |||
| 9 | Dragino Gateway is possible to support (LBT) Listen Before Talk feature with [[LA66 USB LoRaWAN Adapter>>doc:Main.User Manual for LoRaWAN End Nodes.LA66 LoRaWAN Module.WebHome]]. | ||
| 10 | |||
| 11 | |||
| 12 | = 2. How to use = | ||
| 13 | |||
| 14 | |||
| 15 | Connect the LA66 module to the USB port on the side of the gateway. | ||
| 16 | |||
| 17 | |||
| 18 | [[image:image-20220722110817-2.jpeg||height="456" width="608"]] | ||
| 19 | |||
| 20 | |||
| 21 | == 2.1 Upgrade File == | ||
| 22 | |||
| 23 | |||
| 24 | Upgrade the gateway firmware to the LBT version for specific device [[Firmware download>>https://www.dragino.com/downloads/index.php?dir=LoRa_Gateway/LPS8/Firmware/Release/LBT--build-v5.4.1658454438-20220722-0948/]]. This LBT version firmware support LBT by default, users just need to plug in the LA66 USB LoRaWAN Adapter. | ||
| 25 | |||
| 26 | |||
| 27 | == 2.2 Debug == | ||
| 28 | |||
| 29 | |||
| 30 | Apply and save on the web after the above configure has been made | ||
| 31 | |||
| 32 | ((( | ||
| 33 | run "(% style="color:#037691" %)**logread -f**"(%%) in Linux to check the LBT running status. | ||
| 34 | |||
| 35 | If LA66 module returned the value "(% style="color:#037691" %)**FREE"**(%%), indicating that can be downlinked normally. | ||
| 36 | |||
| 37 | If LA66 module returned the value "(% style="color:#037691" %)**BUSY"**(%%), indicates that the downlink can be disturbed. | ||
| 38 | |||
| 39 | Received signals greater than -85dBm return "(% style="color:#037691" %)**BUSY"**(%%), less than return "(% style="color:#037691" %)**FREE"** | ||
| 40 | |||
| 41 | [[image:image-20220705110001-5.png||height="681" width="1375"]] | ||
| 42 | |||
| 43 | |||
| 44 | == 2.3 Trouble Shootings == | ||
| 45 | |||
| 46 | === 2.3.1 How to debug if LBT does not work === | ||
| 47 | |||
| 48 | |||
| 49 | Make sure that the gateway is connected to the LA66 module, Can check by command or via the Web UI. | ||
| 50 | |||
| 51 | [[image:image-20220705104342-4.png||height="760" width="1005"]] | ||
| 52 | |||
| 53 | |||
| 54 | [[image:image-20220705104316-3.png||height="574" width="1005"]] | ||
| 55 | |||
| 56 | |||
| 57 | Access LA66 module log will show CP210X Converter Now Attached to **ttyUSBX** | ||
| 58 | |||
| 59 | [[image:image-20220705111448-6.png||height="249" width="1003"]] | ||
| 60 | |||
| 61 | |||
| 62 | ))) |