Changes for page How to improve LoRaWAN distance
Last modified by Xiaoling on 2024/08/16 11:25
Summary
-
Page properties (1 modified, 0 added, 0 removed)
Details
- Page properties
-
- Content
-
... ... @@ -37,14 +37,15 @@ 37 37 38 38 **End node actually value when TXP=0 and DR=0** 39 39 40 -(% border="1.5" cellspacing=" 4" style="background-color:#F2F2F2; width:1002px" %)41 -|(% style=" width:134px;background-color:#D9E2F3" %)**Frequency band**|(% style="width:400px;background-color:#D9E2F3" %)**Output Power in LoRa Module (consider 2dB antenna)**|(% style="width:362px;background-color:#D9E2F3" %)(((40 +(% border="1.5" cellspacing="3" style="background-color:#f2f2f2; width:1002px" %) 41 +|(% style="background-color:#D9E2F3;color:#0070C0; width:134px" %)**Frequency band**|(% style="background-color:#D9E2F3;color:#0070C0; width:400px" %)**Output Power in LoRa Module (consider 2dB antenna)**|(% style="background-color:#D9E2F3;color:#0070C0; width:362px" %)((( 42 42 **Spreading Factor(Higher SF can transmit further)** 43 -)))|(% style=" width:102px;background-color:#D9E2F3" %)**Band Width**43 +)))|(% style="background-color:#D9E2F3;color:#0070C0; width:102px" %)**Band Width** 44 44 |(% style="width:134px" %)**EU868**|(% style="width:400px" %)14dBm|(% style="width:362px" %)SF=12|(% style="width:102px" %)125Khz 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 + 48 48 == 2.2 Adaptive Data Rate (ADR) and set max distance == 49 49 50 50 ... ... @@ -58,9 +58,9 @@ 58 58 59 59 (% style="color:#037691" %)**AT+ADR=0** 60 60 61 -(% style="color:#037691" %)**AT+DR=0 **~/~/(%%) Use longest distance modulation 62 +(% style="color:#037691" %)**AT+DR=0 **~/~/(%%) Use longest distance modulation 62 62 63 -(% style="color:#037691" %)**AT+TXP=0 **(%%)~/~/Use max power For EU868, max power can be is AT+TXP=50 64 +(% style="color:#037691" %)**AT+TXP=0 **(%%)~/~/ Use max power For EU868, max power can be is AT+TXP=50 64 64 65 65 66 66 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. ... ... @@ -83,13 +83,21 @@ 83 83 84 84 Below are the settings for longest distance transmission. ( will reduce battery life) 85 85 86 -* (% style="color:#037691" %)**AT+ADR=0** (%%)~/~/ Disable ADR 87 -* (% style="color:#037691" %)**AT+DR= 88 -* (% style="color:#037691" %)**AT+TXP=0** (%%) 87 +* (% style="color:#037691" %)**AT+ADR=0** (%%)~/~/ Disable ADR (% style="color:#037691" %)**(downlinkpayload: 2200FFFF)** 88 +* (% style="color:#037691" %)**AT+DR=0** (%%)~/~/ Use the smallest DR,the longest distance modulation (% style="color:#037691" %)**(downlinkpayload: 220000FF)** 89 +* (% style="color:#037691" %)**AT+TXP=0** (%%)~/~/ Use max power For EU868, max power can be is AT+TXP=50 (% style="color:#037691" %)** (downlinkpayload: 22000000)** 89 89 91 +== 2.5 Debug in Software == 92 + 93 +Dragino can help client to debug the software for the distance issue. In the case , please send us below info: 94 + 95 +* Detail packets include for Join Request, Join Accept, Uplink & Downlink, These packets should include: 96 +** RSSI, DataRate, FCNT, Frequency. 97 +** MIC command detail & Payload detail. 98 + 90 90 = 3. Analyze at the hardware side = 91 91 92 -== 3.1 Check if the antenna path is good ~-~- For LS n50v2 series end node ==101 +== 3.1 Check if the antenna path is good ~-~- For LSN50v2 series end node == 93 93 94 94 95 95 a) Open Enclosure and Check if the antenna connection to module is good.