Changes for page Change Gateway Power
Last modified by Xiaoling on 2022/08/10 15:18
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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, 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 (((