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1		-XWiki.Xiaoling
	1	+XWiki.Kilight

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1		-(% class="wikigeneratedid" %)
2		-**Table of Contents:**
	1	+= Overview: =
3	3
4		-{{toc/}}
5		-
6		-
7		-
8		-
9		-= 1.  Overview =
10		-
11		-
12		-(((
13	13	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.
14		-)))
15	15
16	16
17		-= 2.  Change Power for Semtech UDP Paket forward connection =
	6	+= Change Power for Semtech UDP Paket forward connection =
18	18
	8	+----
19	19
20		-(((
21	21	In LoRaWAN protocol, the gateway output power refers to the downstream packets sent by Gateway. This output power is controlled by the LoRaWAN server.
22		-)))
23	23
24		-(((
25	25	Gateway maintains a power index in the file: /etc/lora/global_conf.json for example:
26		-)))
27	27
28	28
29	29	(% class="box" %)
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30	30	(((
31	31	"tx_lut_3": {
32	32	"desc": "TX gain table, index 3",        ~/~/ Index 3 refer to rf_power: 15dB. device will set the pa_gain,mix_gain,dig_gain
33		- "pa_gain": 2,  ~/~/ to the value mentioned here so to generate 15dB output power.
	19	+ "pa_gain": 2,                            ~/~/ to the value mentioned here so to generate 15dB output power.
34	34	"mix_gain": 10,
35	35	"rf_power": 15,
36	36	"dig_gain": 1
...	...	@@ -43,33 +43,25 @@
43	43	"dig_gain": 0
44	44	)))
45	45
	32	+(% class="mark" %)Note: If when lorawan server specifies a rf_power that is not listed above. gateway will choose the closest power. profile.
46	46
47		-(((
48		-(% style="color:red" %)**Note: If when lorawan server specifies a rf_power that is not listed above. gateway will choose the closest power. profile.**
49		-)))
50	50
51		-
52		-(((
53	53	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.
54		-)))
55	55
56		-(((
57	57	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.
58		-)))
59	59
60		-(((
61	61	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
62		-)))
63	63
64	64
65		-= 3.  Change Power for LoRaWAN Basic Station connection =
	42	+= Change Power for LoRaWAN Basic Station connection =
66	66
	44	+----
67	67
68	68	First, you need to find out what is the chip module of the gateway?
69	69
70	70	(% class="box infomessage" %)
71	71	(((
72		-**cat /var/iot/chip **
	50	+cat /var/iot/chip
73	73	)))
74	74
75	75	[[image:image-20220623140335-1.png||height="241" width="378"]]
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77	77	Gateways using the SX1301 LoRaWAN Concentrator are the [[LG308>>https://www.dragino.com/downloads/index.php?dir=LoRa_Gateway/LG308-LG301/&file=Datasheet_LG308_LoRaWAN_Gateway.pdf]] and [[DLOS8>>https://www.dragino.com/downloads/index.php?dir=LoRa_Gateway/DLOS8/&file=DLOS8_LoRaWAN_Gateway_User_Manual_v1.3.pdf]].
78	78
79	79
80		-(% style="color:blue" %)**SX1301 Change Power for LoRaWAN Basic Station Connection example:**
	58	+**SX1301 Change Power for LoRaWAN Basic Station Connection example:**
81	81
82	82	Gateway maintains a power index in the file: /etc/station/station-sx1301.conf
83	83
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109	109	},
110	110	)))
111	111
	90	+Add parameters:**"tx_gain_lut": [ TX_GAIN_LUT, .. ]**
112	112
113		-Add parameters:**"(% style="color:blue" %)tx_gain_lut": [ TX_GAIN_LUT, .. ](%%)**
114		-
115	115	(% class="box" %)
116	116	(((
117	117	{
...	...	@@ -159,22 +159,19 @@
159	159	},
160	160	)))
161	161
162		-See this link for more station configuration parameters: [[Concentrator Design (v1.5) - LoRa Basics™ StationLoRa Basics™ Station ~| DEVELOPER PORTAL (semtech.com)>>url:https://lora-developers.semtech.com/build/software/lora-basics/lora-basics-for-gateways/?url=gw_v1.5.html]]
	139	+See this link for more station configuration parameters:[[Concentrator Design (v1.5) - LoRa Basics™ StationLoRa Basics™ Station ~| DEVELOPER PORTAL (semtech.com)>>url:https://lora-developers.semtech.com/build/software/lora-basics/lora-basics-for-gateways/?url=gw_v1.5.html]]
163	163
164		-
165	165	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.
166	166
167		-(% style="color:red" %)**Note: When the Settings are complete, click "Save&Apply" on the gateway's Web UI**
	143	+(% style="color:red" %)Note: When the Settings are complete, click "Save&Apply" on the gateway's Web UI
168	168
	145	+=== **Checking station Logs** ===
169	169
170		-= 4.  Checking station Logs =
171		-
172		-
173	173	Run the command:
174	174
175	175	(% class="box infomessage" %)
176	176	(((
177		-**tail -f /var/iot/station.log**
	151	+tail -f /var/iot/station.log
178	178	)))
179	179
180	180	[[image:image-20220623145437-2.png||height="501" width="694"]]