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1		-XWiki.Edwin
	1	+XWiki.Kilight

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1		-(% class="wikigeneratedid" %)
2	2	= Overview: =
3	3
4		-In LoRaWAN protocol, the gateway transmit packet use the output power base on the Power Index from LoRaWAN server downlink. for example: LoRaWAN server send downlink with this info "rf_power=14", gatewat 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 case, the LoRaWAN server might set the rf-power to a quite low value ( for example 0dB) which is not practical for use. In such case, User can manunal change the rf_power=0's rf settings to a higher power out. Below are the methods.
	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.
5	5
6	6
7	7	= Change Power for Semtech UDP Paket forward connection =
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8	8
9	9	----
10	10
11		-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.
12	12
13		-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:
14	14
15	15
16	16	(% class="box" %)
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30	30	"dig_gain": 0
31	31	)))
32	32
33		-(% 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.
34	34
35	35
36		-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.
37	37
38		-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.
39	39
40		-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
41	41
42	42
43		-
44	44	= 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	+[[image:image-20220623140335-1.png||height="241" width="378"]]
	54	+
	55	+Gateways using the SX1301 LoRaWAN Concentrator are the LG308 and DLOS8.
	56	+
	57	+
	58	+**SX1301 Change Power for LoRaWAN Basic Station Connection example:**
	59	+
	60	+Gateway maintains a power index in the file: /etc/station/station-sx1301.conf for example:
	61	+
	62	+(% class="box" %)
	63	+(((
	64	+{
	65	+ /* If slave-X.conf present this acts as default settings */
	66	+ "SX1301_conf": { /* Actual channel plan is controlled by server */
	67	+ "lorawan_public": true, /* is default */
	68	+ "clksrc": 1, /* radio_1 provides clock to concentrator */
	69	+ /* path to the SPI device, un-comment if not specified on the command line e.g., RADIODEV=/dev/spidev0.0 */
	70	+ "device": "/dev/spidev1.0",
	71	+ /* freq/enable provided by LNS - only HW specific settings listed here */
	72	+
	73	+ ** |<~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-(% style="color:red" %)Add parameters:"tx_gain_lut"  :  [ TX_GAIN_LUT, .. ](%%)**
	74	+
	75	+ "radio_0": {
	76	+ "type": "SX1257",
	77	+ "rssi_offset": -166.0,
	78	+ "tx_enable": true,
	79	+ "antenna_gain": 0
	80	+ },
	81	+ "radio_1": {
	82	+ "type": "SX1257",
	83	+ "rssi_offset": -166.0,
	84	+ "tx_enable": false
	85	+ }
	86	+ /* chan_multiSF_X, chan_Lora_std, chan_FSK provided by LNS */
	87	+ },
	88	+)))
	89	+
	90	+(% class="box" %)
	91	+(((
	92	+{
	93	+ /* If slave-X.conf present this acts as default settings */
	94	+ "SX1301_conf": { /* Actual channel plan is controlled by server */
	95	+ "lorawan_public": true, /* is default */
	96	+ "clksrc": 1, /* radio_1 provides clock to concentrator */
	97	+ /* path to the SPI device, un-comment if not specified on the command line e.g., RADIODEV=/dev/spidev0.0 */
	98	+ "device": "/dev/spidev1.0",
	99	+ /* freq/enable provided by LNS - only HW specific settings listed here */
	100	+ "tx_gain_lut":[
	101	+ {"rf_power": 12, "pa_gain": 2, "mix_gain": 11, "dig_gain": 2, "dac_gain": 3},
	102	+ {"rf_power": 13, "pa_gain": 2, "mix_gain": 10, "dig_gain": 0, "dac_gain": 3},
	103	+ {"rf_power": 14, "pa_gain": 2, "mix_gain": 12, "dig_gain": 2, "dac_gain": 3},
	104	+ {"rf_power": 15, "pa_gain": 2, "mix_gain": 13, "dig_gain": 2, "dac_gain": 3},
	105	+ {"rf_power": 16, "pa_gain": 2, "mix_gain": 13, "dig_gain": 1, "dac_gain": 3},
	106	+ {"rf_power": 17, "pa_gain": 2, "mix_gain": 14, "dig_gain": 1, "dac_gain": 3},
	107	+ {"rf_power": 18, "pa_gain": 2, "mix_gain": 15, "dig_gain": 2, "dac_gain": 3},
	108	+ {"rf_power": 19, "pa_gain": 2, "mix_gain": 15, "dig_gain": 1, "dac_gain": 3},
	109	+ {"rf_power": 20, "pa_gain": 2, "mix_gain": 15, "dig_gain": 1, "dac_gain": 3},
	110	+ {"rf_power": 21, "pa_gain": 3, "mix_gain": 9, "dig_gain": 0, "dac_gain": 3},
	111	+ {"rf_power": 22, "pa_gain": 3, "mix_gain": 10, "dig_gain": 0, "dac_gain": 3},
	112	+ {"rf_power": 23, "pa_gain": 3, "mix_gain": 11, "dig_gain": 1, "dac_gain": 3},
	113	+ {"rf_power": 24, "pa_gain": 3, "mix_gain": 12, "dig_gain": 0, "dac_gain": 3},
	114	+ {"rf_power": 25, "pa_gain": 3, "mix_gain": 14, "dig_gain": 0, "dac_gain": 3},
	115	+ {"rf_power": 26, "pa_gain": 3, "mix_gain": 14, "dig_gain": 0, "dac_gain": 3},
	116	+ {"rf_power": 27, "pa_gain": 3, "mix_gain": 14, "dig_gain": 0, "dac_gain": 3}
	117	+ ],
	118	+ "radio_0": {
	119	+ "type": "SX1257",
	120	+ "rssi_offset": -166.0,
	121	+ "tx_enable": true,
	122	+ "antenna_gain": 0
	123	+ },
	124	+ "radio_1": {
	125	+ "type": "SX1257",
	126	+ "rssi_offset": -166.0,
	127	+ "tx_enable": false
	128	+ }
	129	+ /* chan_multiSF_X, chan_Lora_std, chan_FSK provided by LNS */
	130	+ },
	131	+)))
	132	+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.
	133	+
	134	+

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