Changes for page How to improve LoRaWAN distance
Last modified by Xiaoling on 2024/08/16 11:25
Change comment:
There is no comment for this version
Summary
-
Page properties (2 modified, 0 added, 0 removed)
-
Attachments (0 modified, 0 added, 3 removed)
Details
- Page properties
-
- Author
-
... ... @@ -1,1 +1,1 @@ 1 -XWiki. Edwin1 +XWiki.Xiaoling - Content
-
... ... @@ -10,9 +10,9 @@ 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 15 + 16 16 == 2.1 LoRa parameters that effect distance == 17 17 18 18 ... ... @@ -74,7 +74,7 @@ 74 74 According to the above technology, if we have a problem on the distance, we can first check if the end node is trying to longest distance modulation already. We can see that from the LoRaWAN server. Below is an example from Chirpstack. 75 75 76 76 77 -We can see the traffic in gateway 's page and know that the distance is SF12 / BW125. (note, server is not able to know Transmit Power settings from End Node)77 +We can see the traffic in gateway’s page and know that the distance is SF12 / BW125. (note, server is not able to know Transmit Power settings from End Node) 78 78 79 79 80 80 [[image:image-20221006185826-3.png]] ... ... @@ -86,32 +86,18 @@ 86 86 87 87 Below are the settings for longest distance transmission. ( will reduce battery life) 88 88 89 -* (% style="color:#037691" %) **AT+ADR=0**(%%)~/~/ Disable ADR90 -* (% style="color:#037691" %) **AT+DR= 0**(%%)~/~/ Use the smallest DR91 -* (% style="color:#037691" %) **AT+TXP=0**(%%) ~/~/ Use max power.89 +* (% style="color:#037691" %)AT+ADR=0 (%%)~/~/ Disable ADR 90 +* (% style="color:#037691" %)AT+DR= 0 (%%)~/~/ Use the smallest DR 91 +* (% style="color:#037691" %)AT+TXP=0 (%%) ~/~/ Use max power. 92 92 93 93 94 94 95 += 3. Installation Guidelines = 95 95 96 -= 3. Analyze at the hardware side = 97 97 98 -== 3.1 Check iftheantennapathis good ~-~- ForLSn50v2 series endnode==98 +== 3.1 Check the use environment == 99 99 100 100 101 -a) Open Enclosure and Check if the antenna connection to module is good. 102 - 103 -b) check if the connector match. 104 - 105 - 106 -[[image:image-20221016081725-1.png||height="426" width="706"]] 107 - 108 - 109 - 110 -= 4. Installation Guidelines = 111 - 112 -== 4.1 Check the use environment == 113 - 114 - 115 115 First , User should notice: Radio link quality and performances are highly dependent of the environment. 116 116 117 117 (% style="color:blue" %)**Better performances can be reached with:** ... ... @@ -121,6 +121,8 @@ 121 121 * No high level radio interferes in the ISM band you use. 122 122 * At least 1 meter above the ground. 123 123 110 + 111 + 124 124 (% style="color:blue" %)**Radio performances are degraded with:** 125 125 126 126 * Obstacles: buildings, trees... ... ... @@ -130,19 +130,19 @@ 130 130 131 131 132 132 121 +== 3.2 Improve the Antenna == 133 133 134 -== 4.2 Improve the Antenna == 135 135 136 - 137 137 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. 138 138 139 139 140 140 141 -= 5. Some real-world case =128 += 4. Some real-world case = 142 142 143 -== 5.1 Server reason cause end node has problem on Join. == 144 144 131 +== 4.1 Server reason cause end node has problem on Join. == 145 145 133 + 146 146 In one case, the customer is using AWS IoT Core and gateway to connect to AWS via Basic Station Connection, Frequency Band is AU915 sub-band 2. For some unknown reason, AWS always set downlink power to 0dBm, which cause the gateway only emit a very low power and lead to a short distance for sensor. 147 147 148 148
- image-20221016081725-1.png
-
- Author
-
... ... @@ -1,1 +1,0 @@ 1 -XWiki.Edwin - Size
-
... ... @@ -1,1 +1,0 @@ 1 -569.8 KB - Content
- image-20221031233524-1.png
-
- Author
-
... ... @@ -1,1 +1,0 @@ 1 -XWiki.Edwin - Size
-
... ... @@ -1,1 +1,0 @@ 1 -75.1 KB - Content
- image-20221031233628-2.png
-
- Author
-
... ... @@ -1,1 +1,0 @@ 1 -XWiki.Edwin - Size
-
... ... @@ -1,1 +1,0 @@ 1 -72.3 KB - Content