<
From version < 18.5
edited by Xiaoling
on 2022/08/10 15:18
To version < 18.2 >
edited by Xiaoling
on 2022/07/22 15:07
Change comment: There is no comment for this version

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... ... @@ -9,22 +9,15 @@
9 9  = 1.  Overview =
10 10  
11 11  
12 -(((
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 -)))
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.
15 15  
16 16  
17 -
18 18  = 2.  Change Power for Semtech UDP Paket forward connection =
19 19  
20 20  
21 -(((
22 22  In LoRaWAN protocol, the gateway output power refers to the downstream packets sent by Gateway. This output power is controlled by the LoRaWAN server.
23 -)))
24 24  
25 -(((
26 26  Gateway maintains a power index in the file: /etc/lora/global_conf.json for example:
27 -)))
28 28  
29 29  
30 30  (% class="box" %)
... ... @@ -31,7 +31,7 @@
31 31  (((
32 32  "tx_lut_3": {
33 33   "desc": "TX gain table, index 3",        ~/~/ Index 3 refer to rf_power: 15dB. device will set the pa_gain,mix_gain,dig_gain 
34 - "pa_gain": 2,  ~/~/ to the value mentioned here so to generate 15dB output power.
27 + "pa_gain": 2,                            ~/~/ to the value mentioned here so to generate 15dB output power.
35 35   "mix_gain": 10,
36 36   "rf_power": 15,
37 37   "dig_gain": 1
... ... @@ -45,31 +45,20 @@
45 45  )))
46 46  
47 47  
48 -(((
49 49  (% style="color:red" %)**Note: If when lorawan server specifies a rf_power that is not listed above. gateway will choose the closest power. profile.**
50 -)))
51 51  
52 52  
53 -(((
54 54  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.
55 -)))
56 56  
57 -(((
58 58  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.
59 -)))
60 60  
61 -(((
62 62  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
63 -)))
64 64  
65 65  
66 -
67 67  = 3.  Change Power for LoRaWAN Basic Station connection =
68 68  
69 69  
70 -(((
71 71  First, you need to find out what is the chip module of the gateway?
72 -)))
73 73  
74 74  (% class="box infomessage" %)
75 75  (((
... ... @@ -163,29 +163,18 @@
163 163   },
164 164  )))
165 165  
166 -(((
167 167  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]]
168 -)))
169 169  
170 170  
171 -(((
172 172  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.
173 173  
174 -
175 -)))
176 -
177 -(((
178 178  (% style="color:red" %)**Note: When the Settings are complete, click "Save&Apply" on the gateway's Web UI**
179 -)))
180 180  
181 181  
182 -
183 183  = 4.  Checking station Logs =
184 184  
185 185  
186 -(((
187 187  Run the command:
188 -)))
189 189  
190 190  (% class="box infomessage" %)
191 191  (((
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