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Author

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1		-XWiki.Edwin
	1	+XWiki.Kilight

Content

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1		-= Introduction =
	1	+= Overview: =
2	2
	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	+
	5	+
	6	+= Change Power for Semtech UDP Paket forward connection =
	7	+
3	3	----
4	4
5		-In LoRaWAN protocol, the gateway output power refer to the downstream packets sent by Gateway. This output power is controlled by LoRaWAN server.
	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.
6	6
7		-Gateway maintain a power index in the file: /etc/lora/global_conf.json for example:
	12	+Gateway maintains a power index in the file: /etc/lora/global_conf.json for example:
8	8
9	9
10	10	(% class="box" %)
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24	24	"dig_gain": 0
25	25	)))
26	26
27		-(% class="mark" %)Note: If when lorawan server specify a rf_power which is not list above. gateway will choose the closest power. profile.
	32	+(% class="mark" %)Note: If when lorawan server specifies a rf_power that is not listed above. gateway will choose the closest power. profile.
28	28
29	29
30		-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.
	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.
31	31
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	+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.
33	33
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
	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	+