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Author

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1		-XWiki.Xiaoling
	1	+XWiki.Edwin

Content

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1		-= Introduction =
	1	+= Change Power for Semtech UDP Paket forward connection =
2	2
3		-(((
	3	+----
	4	+
4	4	In LoRaWAN protocol, the gateway output power refer to the downstream packets sent by Gateway. This output power is controlled by LoRaWAN server.
5		-)))
6	6
7		-(((
8	8	Gateway maintain a power index in the file: /etc/lora/global_conf.json for example:
9		-)))
10	10
	9	+
11	11	(% class="box" %)
12	12	(((
13		-(((
14	14	"tx_lut_3": {
15	15	"desc": "TX gain table, index 3",        ~/~/ Index 3 refer to rf_power: 15dB. device will set the pa_gain,mix_gain,dig_gain
16	16	"pa_gain": 2,                            ~/~/ to the value mentioned here so to generate 15dB output power.
...	...	@@ -25,16 +25,16 @@
25	25	"rf_power": 16,
26	26	"dig_gain": 0
27	27	)))
28		-)))
29	29
30		-(((
	27	+(% class="mark" %)Note: If when lorawan server specify a rf_power which is not list above. gateway will choose the closest power. profile.
	28	+
	29	+
31	31	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		-)))
33	33
34		-(((
35		-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.
36		-)))
	32	+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 recommended, because this might break the regulator for specific country.
37	37
38		-(((
39		-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
40		-)))
	34	+Please note, that the global_conf.json file will be overwritten by the match region files in /etc/lora/cfg-30x when changing settings in the web. So user needs to change the files in /etc/lora/cfg-cfg-30x instead of global_conf.json
	35	+
	36	+
	37	+
	38	+= Change Power for LoRaWAN Basic Station connection =