Wiki source code of Listen Before Talk Feature
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| author | version | line-number | content |
|---|---|---|---|
| 1 | **Contents:** | ||
| 2 | |||
| 3 | {{toc/}} | ||
| 4 | |||
| 5 | |||
| 6 | = 1. Introduction = | ||
| 7 | |||
| 8 | Dragino Gateway is possible to support Listen Before Talk feature with an external USB to LoRaWAN module (this module in under development). | ||
| 9 | |||
| 10 | |||
| 11 | = 2. How to use = | ||
| 12 | |||
| 13 | == 2.1 Upgrade File == | ||
| 14 | |||
| 15 | Upgrade the firmware to version higher than > lgw~-~-build-v5.4.1603422765-20201023-1130 . [[Firmware download>>url:http://www.dragino.com/downloads/index.php?dir=LoRa_Gateway/LG308-LG301/Firmware/Release/]], [[Firmware Changelog>>url:http://www.dragino.com/downloads/downloads/LoRa_Gateway/LG308-LG301/Firmware/ChangeLog]] | ||
| 16 | |||
| 17 | |||
| 18 | == 2.2 Modify file to support LBT == | ||
| 19 | |||
| 20 | Modify the Frequendy band file. for LG308 and OLG01, please modify file under (% style="color:#037691" %)**/etc/lora/cfg-301/**(%%), for LPS8, modify file under (% style="color:#037691" %)**/etc/lora/cfg-308/**. | ||
| 21 | |||
| 22 | ((( | ||
| 23 | File content modify like below: | ||
| 24 | ))) | ||
| 25 | |||
| 26 | (% class="box" %) | ||
| 27 | ((( | ||
| 28 | "lbt_cfg": { | ||
| 29 | "enable": false, ~-~--> Change this to true | ||
| 30 | "rssi_target": -80, | ||
| 31 | "chan_cfg":[ | ||
| 32 | { "freq_hz": 922000000, "scan_time_us": 128 }, | ||
| 33 | { "freq_hz": 922200000, "scan_time_us": 128 }, | ||
| 34 | { "freq_hz": 922400000, "scan_time_us": 128 }, | ||
| 35 | { "freq_hz": 922600000, "scan_time_us": 128 }, | ||
| 36 | { "freq_hz": 922800000, "scan_time_us": 128 }, | ||
| 37 | { "freq_hz": 923000000, "scan_time_us": 128 }, | ||
| 38 | { "freq_hz": 923200000, "scan_time_us": 128 }, | ||
| 39 | { "freq_hz": 923400000, "scan_time_us": 128 ~-~--> These are the frequency to be monitored. please note, the frequency must from low to high. Above settings is not correct. | ||
| 40 | ], | ||
| 41 | "sx127x_rssi_offset": -4 | ||
| 42 | }, | ||
| 43 | ))) | ||
| 44 | |||
| 45 | |||
| 46 | == 2.3 Test == | ||
| 47 | |||
| 48 | Apply and save in the web after above configure has been made | ||
| 49 | |||
| 50 | ((( | ||
| 51 | run "**(% style="color:#037691" %)logread -f**"(%%) in linux to check the LBT running status. | ||
| 52 | ))) |