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Changes for page Change Gateway Power

Last modified by Xiaoling on 2022/08/10 15:18
From version 1.3
edited by Xiaoling
on 2022/05/14 13:44
Change comment: There is no comment for this version
To version 11.1
edited by Kilight Cao
on 2022/06/23 14:03
Change comment: Uploaded new attachment "image-20220623140335-1.png", version {1}

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Author
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1 -XWiki.Xiaoling
1 +XWiki.Kilight
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1 -= Introduction =
1 += Overview: =
2 2  
3 -In LoRaWAN protocol, the gateway output power refer to the downstream packets sent by Gateway. This output power is controlled by LoRaWAN server.
3 +In LoRaWAN protocol, the gateway transmit packet uses the output power base on the Power Index from the LoRaWAN server downlink. for example, the LoRaWAN server sends a downlink with this info "rf_power=14", gateway got this info and it will search the index for rf_power=14 and use the related rf setting to set output power. In some cases, the LoRaWAN server might set the rf-power to a quite low value ( for example 0dB) which is not practical for use. In such a case, the User can manually change the rf_power=0's rf settings to a higher power out. Below are the methods.
4 4  
5 -Gateway maintain a power index in the file: /etc/lora/global_conf.json for example:
6 6  
6 += Change Power for Semtech UDP Paket forward connection =
7 +
8 +----
9 +
10 +In LoRaWAN protocol, the gateway output power refers to the downstream packets sent by Gateway. This output power is controlled by the LoRaWAN server.
11 +
12 +Gateway maintains a power index in the file: /etc/lora/global_conf.json for example:
13 +
14 +
7 7  (% class="box" %)
8 8  (((
9 9  "tx_lut_3": {
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21 21   "dig_gain": 0
22 22  )))
23 23  
24 -When LoRaWAN server sends a downlink stream, server will also ask the gateway to use which rf_power as output. So user don't need to consider to control in the gateway side.
32 +(% class="mark" %)Note: If when lorawan server specifies a rf_power that is not listed above. gateway will choose the closest power. profile.
25 25  
26 -If user want to always use a higher power or a lower power. User can modify the pa_gain,mix_gain,dig_gain for specify rf_power to achieve this purpose. This is not recommend, because this might break the regulator for specify country.
27 27  
28 -Please note, the global_conf.json file will be overwrite by the match region files in /etc/lora/cfg-30x when change settings in the web. So user need to change the files in /etc/lora/cfg-cfg-30x instead of global_conf.json
35 +When the LoRaWAN server sends a downlink stream, the server will also ask the gateway to use rf_power as output. So users don't need to consider controlling on the gateway side.
36 +
37 +If users want to always use a higher power or a lower power. Users can modify the pa_gain,mix_gain, and dig_gain to specify rf_power to achieve this purpose. This is not recommended, because this might break the regulator for a specific country.
38 +
39 +Please note, that the global_conf.json file will be overwritten by the match region files in /etc/lora/cfg-30x when changing settings on the web. So the user needs to change the files in /etc/lora/cfg-cfg-30x instead of global_conf.json
40 +
41 +
42 += Change Power for LoRaWAN Basic Station connection =
43 +
44 +----
45 +
46 +First, you need to find out what is the chip module of the gateway?
47 +
48 +(% class="box infomessage" %)
49 +(((
50 +cat /var/iot/chip
51 +)))
52 +
53 +(% class="box" %)
54 +(((
55 +root@dragino-1bbe0c:~~# cat /var/iot/chip 
56 +sx1301
57 +root@dragino-1bbe0c:~~#
58 +)))
59 +
60 +If users want to always use a higher power or a lower power. Users can modify the pa_gain,mix_gain, and dig_gain to specify rf_power to achieve this purpose. This is not recommended, because this might break the regulator for a specific country.
61 +
62 +
image-20220623140335-1.png
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1 +XWiki.Kilight
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