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Changes for page Change Gateway Power

Last modified by Xiaoling on 2022/08/10 15:18
From version 18.2
edited by Xiaoling
on 2022/07/22 15:07
Change comment: There is no comment for this version
To version 18.1
edited by Kilight Cao
on 2022/06/23 14:58
Change comment: There is no comment for this version

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Author
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1 -XWiki.Xiaoling
1 +XWiki.Kilight
Content
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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 12  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.
13 13  
14 14  
15 -= 2.  Change Power for Semtech UDP Paket forward connection =
6 += Change Power for Semtech UDP Paket forward connection =
16 16  
8 +----
17 17  
18 18  In LoRaWAN protocol, the gateway output power refers to the downstream packets sent by Gateway. This output power is controlled by the LoRaWAN server.
19 19  
... ... @@ -37,10 +37,9 @@
37 37   "dig_gain": 0
38 38  )))
39 39  
32 +(% class="mark" %)Note: If when lorawan server specifies a rf_power that is not listed above. gateway will choose the closest power. profile.
40 40  
41 -(% style="color:red" %)**Note: If when lorawan server specifies a rf_power that is not listed above. gateway will choose the closest power. profile.**
42 42  
43 -
44 44  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.
45 45  
46 46  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.
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48 48  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
49 49  
50 50  
51 -= 3.  Change Power for LoRaWAN Basic Station connection =
42 += Change Power for LoRaWAN Basic Station connection =
52 52  
44 +----
53 53  
54 54  First, you need to find out what is the chip module of the gateway?
55 55  
56 56  (% class="box infomessage" %)
57 57  (((
58 -**cat /var/iot/chip **
50 +cat /var/iot/chip
59 59  )))
60 60  
61 61  [[image:image-20220623140335-1.png||height="241" width="378"]]
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63 63  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]].
64 64  
65 65  
66 -(% style="color:blue" %)**SX1301 Change Power for LoRaWAN Basic Station Connection example:**
58 +**SX1301 Change Power for LoRaWAN Basic Station Connection example:**
67 67  
68 68  Gateway maintains a power index in the file: /etc/station/station-sx1301.conf
69 69  
... ... @@ -95,9 +95,8 @@
95 95   },
96 96  )))
97 97  
90 +Add parameters:**"tx_gain_lut": [ TX_GAIN_LUT, .. ]**
98 98  
99 -Add parameters:**"(% style="color:blue" %)tx_gain_lut": [ TX_GAIN_LUT, .. ](%%)**
100 -
101 101  (% class="box" %)
102 102  (((
103 103  {
... ... @@ -145,22 +145,19 @@
145 145   },
146 146  )))
147 147  
148 -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]]
149 149  
150 -
151 151  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.
152 152  
153 -(% 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
154 154  
145 +=== **Checking station Logs** ===
155 155  
156 -= 4.  Checking station Logs =
157 -
158 -
159 159  Run the command:
160 160  
161 161  (% class="box infomessage" %)
162 162  (((
163 -**tail -f /var/iot/station.log**
151 +tail -f /var/iot/station.log
164 164  )))
165 165  
166 166  [[image:image-20220623145437-2.png||height="501" width="694"]]