Changes for page Switch LoRaWAN server by rejoin feature
Last modified by Xiaoling on 2024/05/20 09:36
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... ... @@ -8,84 +8,3 @@ 8 8 9 9 10 10 = 1. introduction = 11 - 12 -This chapter describes how to set Transmit Time Interval. 13 - 14 - 15 -= 2. What is the rejoin feature? = 16 - 17 -The rejoin feature is 18 - 19 -== 2.1 Device offline rejoining (LWS007) == 20 - 21 - 22 -(% style="color:blue" %)**AT Command: AT+DDETECT** 23 - 24 -AT+DDETECT=<Flag>,<ACK_Timout_1>,<ACK_Timout_2> (Default Value: AT+DDETECT=1,1440,2880) 25 - 26 -* ACK_Timout_1: Unit: min 27 - 28 -* ACK_Timout_2: Unit: min 29 - 30 -(% border="1" style="background-color:#f2f2f2; width:562px" %) 31 -|(% style="background-color:#4f81bd; color:white; width:160px" %)**Command Example**|(% style="background-color:#4f81bd; color:white; width:272px" %)**Function**|(% style="background-color:#4f81bd; color:white; width:89px" %)**Response** 32 -|(% style="width:160px" %)((( 33 -AT+DDETECT=1,1440,2880 34 - 35 -value1 36 -)))|(% style="width:272px" %)Enable online detect|(% style="width:89px" %)((( 37 -1 38 - 39 -OK 40 -))) 41 -|(% style="width:160px" %)((( 42 -AT+DDETECT=1,?,2880 43 - 44 -value2 45 -)))|(% style="width:272px" %)Online detection packet sending time|(% style="width:89px" %)((( 46 - 47 - 48 -OK 49 -))) 50 -|(% style="width:160px" %)((( 51 -AT+DDETECT=1,1440,? 52 - 53 -value3 54 -)))|(% style="width:272px" %)Process rejoin|(% style="width:89px" %)((( 55 - 56 - 57 -OK 58 -))) 59 - 60 -(% style="color:blue" %)**Downlink Command: 0x32** 61 - 62 -Format: Command Code (0x32) followed by 2 bytes mode value. 63 - 64 -If the downlink payload=320105A00B40, it means set end node to use confirm mode, while type code is 32. 65 - 66 -* **Example 1:** Downlink Payload: 320105A00B40 ~/~/ Set AT+DDETECT=1,1440,2880 67 - 68 -* 69 -** 0x01** : Flag** 70 - 71 - **0x05A0 **: ACK_Timout_1 : 1440minutes (24 hours) 72 - 73 - **0x0B40 **: ACK_Timout_2 : 2880minutes (48 hours) 74 - 75 -* **Explain**: Enable Online Detect, if end node doesn't receive any downlink within ACK_Timout_1( 1440 minutes or 24 hours). End node will use confirmed uplink to send packets during ACK_Timout_1 (the 24th hour) to ACK_Timout_2 ( the 48th hour). If from the 24th to 48th hour, end node got an downlink from server, it will switch back to unconfirmed uplink. end node will restart ACK_Timout_1. If from the 24th to 48th hour, end node still not got any downlink, means device doesn't get ACK from server within last 48 hours. Device will process rejoin, rejoin request interval is AT+RJTDC period. For AU915/ US915, device will use the sub-band used for last join. 76 - 77 -(% style="display:none" %) (%%) 78 - 79 - 80 - 81 - 82 - 83 - 84 - 85 - 86 - 87 - 88 - 89 - 90 - 91 -