Changes for page How to improve LoRaWAN distance
Last modified by Xiaoling on 2024/08/16 11:25
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... ... @@ -45,7 +45,6 @@ 45 45 |(% 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 46 46 |(% style="width:134px" %)**AS923**|(% style="width:400px" %)14dBm|(% style="width:362px" %)SF=12|(% style="width:102px" %)125Khz 47 47 48 - 49 49 == 2.2 Adaptive Data Rate (ADR) and set max distance == 50 50 51 51 ... ... @@ -59,9 +59,9 @@ 59 59 60 60 (% style="color:#037691" %)**AT+ADR=0** 61 61 62 -(% style="color:#037691" %)**AT+DR=0 **~/~/(%%) Use longest distance modulation 61 +(% style="color:#037691" %)**AT+DR=0 **~/~/(%%) Use longest distance modulation 63 63 64 -(% style="color:#037691" %)**AT+TXP=0 **(%%)~/~/Use max power For EU868, max power can be is AT+TXP=50 63 +(% style="color:#037691" %)**AT+TXP=0 **(%%)~/~/ Use max power For EU868, max power can be is AT+TXP=50 65 65 66 66 67 67 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. ... ... @@ -84,14 +84,21 @@ 84 84 85 85 Below are the settings for longest distance transmission. ( will reduce battery life) 86 86 87 -* (% style="color:#037691" %)**AT+ADR=0** (%%)~/~/ Disable ADR 88 -* (% style="color:#037691" %)**AT+DR= 89 -* (% style="color:#037691" %)**AT+TXP=0** (%%) 86 +* (% style="color:#037691" %)**AT+ADR=0** (%%)~/~/ Disable ADR (% style="color:#037691" %)**(downlinkpayload: 2200FFFF)** 87 +* (% style="color:#037691" %)**AT+DR=0** (%%)~/~/ Use the smallest DR,the longest distance modulation (% style="color:#037691" %)**(downlinkpayload: 220000FF)** 88 +* (% style="color:#037691" %)**AT+TXP=0** (%%)~/~/ Use max power For EU868, max power can be is AT+TXP=50 (% style="color:#037691" %)** (downlinkpayload: 22000000)** 90 90 90 +== 2.5 Debug in Software == 91 91 92 +Dragino can help client to debug the software for the distance issue. In the case , please send us below info: 93 + 94 +* Detail packets include for Join Request, Join Accept, Uplink & Downlink, These packets should include: 95 +** RSSI, DataRate, FCNT, Frequency. 96 +** MIC command detail & Payload detail. 97 + 92 92 = 3. Analyze at the hardware side = 93 93 94 -== 3.1 Check if the antenna path is good ~-~- For LS n50v2 series end node ==100 +== 3.1 Check if the antenna path is good ~-~- For LSN50v2 series end node == 95 95 96 96 97 97 a) Open Enclosure and Check if the antenna connection to module is good. ... ... @@ -123,7 +123,6 @@ 123 123 * High ISM band usage by other technologies. 124 124 * Radio communication are usually killed with bad topographic conditions. It is usually not possible to communicate through a hill, even very small. 125 125 126 - 127 127 == 4.2 Improve the Antenna == 128 128 129 129