Changes for page How to improve LoRaWAN distance
Last modified by Xiaoling on 2024/08/16 11:25
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... ... @@ -10,7 +10,6 @@ 10 10 In real-world deployment for LoRa, distance is a common topic. We always want to have the longest distance. This chapter shows some instructions for how to improve this. 11 11 12 12 13 - 14 14 = 2. Analyze at the software side = 15 15 16 16 == 2.1 LoRa parameters that effect distance == ... ... @@ -44,6 +44,7 @@ 44 44 |(% style="width:134px" %)**US915**|(% style="width:400px" %)20 or 22 dBm (depends on max output of module)|(% style="width:362px" %)SF=10|(% style="width:102px" %)125Khz 45 45 |(% style="width:134px" %)**AS923**|(% style="width:400px" %)14dBm|(% style="width:362px" %)SF=12|(% style="width:102px" %)125Khz 46 46 46 + 47 47 == 2.2 Adaptive Data Rate (ADR) and set max distance == 48 48 49 49 ... ... @@ -65,7 +65,6 @@ 65 65 This can be downlink via the LoRaWAN downlink command, see [[this link>>url:http://wiki.dragino.com/xwiki/bin/view/Main/End%20Device%20AT%20Commands%20and%20Downlink%20Command/#H8.2UseDownlinkCommandtosetafixuplinkDR]] for reference. 66 66 67 67 68 - 69 69 == 2.3 Check for short distance problem == 70 70 71 71 ... ... @@ -78,7 +78,6 @@ 78 78 [[image:image-20221006185826-3.png]] 79 79 80 80 81 - 82 82 == 2.4 Best software settings for the longest distance == 83 83 84 84 ... ... @@ -102,13 +102,12 @@ 102 102 [[image:image-20221016081725-1.png||height="426" width="706"]] 103 103 104 104 105 - 106 106 = 4. Installation Guidelines = 107 107 108 108 == 4.1 Check the use environment == 109 109 110 110 111 -First , User should notice: Radio link quality and performances are highly dependent of the environment. 108 +First , User should notice: Radio link quality and performances are highly dependent of the environment.Even you have the same hardware and antenna, Different installation will result in different performance. 112 112 113 113 (% style="color:blue" %)**Better performances can be reached with:** 114 114 ... ... @@ -131,7 +131,6 @@ 131 131 In some case, we have to install the device inside the chamber or next to a metal case. So the signal between the antenna and the receiver (gateway) is blocked by the metal. This will greatly reduce the signal. In such case, we can consider using antenna extend cable to extend the antenna to a better position. 132 132 133 133 134 - 135 135 = 5. Some real-world case = 136 136 137 137 == 5.1 Server reason cause end node has problem on Join. == ... ... @@ -171,6 +171,10 @@ 171 171 [[image:image-20221101000006-1.png||height="353" width="931"]] 172 172 173 173 170 += 6. Use a repeater = 174 174 172 +In some cases, user can consider use a repeater for limitation transmition. 175 175 174 +See here for how to set up: [[http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/User%20Manual%20for%20All%20Gateway%20models/LoRaWAN%20IoT%20Kit%20v3%20User%20Manual/#H7.Example6:LimitedLoRaWANrelay >>http://wiki.dragino.com/xwiki/bin/view/Main/User%20Manual%20for%20All%20Gateway%20models/LoRaWAN%20IoT%20Kit%20v3%20User%20Manual/#H7.Example6:LimitedLoRaWANrelay]] 176 176 176 +