Last modified by Edwin Chen on 2025/01/29 20:30
<
From version < 22.2 >
edited by Xiaoling
on 2022/05/26 16:48
To version < 17.1 >
edited by Xiaoling
on 2022/05/26 16:40
>
Change comment: Uploaded new attachment "image-20220526164052-9.png", version {1}

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102 102  
103 103  US915 Channels
104 104  
105 -[[image:image-20220526163926-7.png]]
105 +[[image:https://wiki.dragino.com/images/8/8a/AU915_FRE_BAND-1.png]]
106 106  
107 107  AU915 Channels
108 108  
109 -[[image:image-20220526163941-8.png]]
109 +[[image:https://wiki.dragino.com/images/thumb/3/3a/CN470_FRE_BAND-1.png/600px-CN470_FRE_BAND-1.png||height="205" width="600"]]
110 110  
111 111  (((
112 112  CN470 Channels
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116 116  If we look at the [[TTN network server frequency plan>>url:https://www.thethingsnetwork.org/docs/lorawan/frequency-plans.html]], we can see the US915 frequency band use the channel 8~~15.So the End Node must work at the same frequency in US915 8~~15 channels for TTN server.
117 117  )))
118 118  
119 -[[image:image-20220526164052-9.png]]
119 +[[image:https://wiki.dragino.com/images/thumb/9/9a/US915_FRE_BAND-2.png/600px-US915_FRE_BAND-2.png||height="288" width="600"]]
120 120  
121 121  (((
122 122  TTN FREQUENCY PLAN
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170 170  To solve this, disable the Frame Counter Check will solve this issue , or reset the frame counter in the device page.
171 171  )))
172 172  
173 -[[image:image-20220526164508-10.png]]
173 +[[~[~[image:https://wiki.dragino.com/images/thumb/1/19/ABP_Issue-1.jpg/600px-ABP_Issue-1.jpg~|~|height="340" width="600"~]~]>>url:https://wiki.dragino.com/index.php/File:ABP_Issue-1.jpg]]
174 174  
175 175  Disable Frame Counter Check in ABP Mode
176 176  
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185 185  Depends on Class A or Class C, the receive windows will be a little difference,
186 186  )))
187 187  
188 -[[image:image-20220526164547-11.png]]
188 +[[image:https://wiki.dragino.com/images/thumb/1/1a/Downstream_LoRaWAN-1.png/600px-Downstream_LoRaWAN-1.png||height="590" width="600"]]
189 189  
190 190  receive windows for Class A and Class C
191 191  
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197 197  * This packet must match the frequency of the RX1 or RX2 window.
198 198  * This packet must match the DataRate of RX1(RX1DR) or RX2 (RX2DR). **This is the common fail point, because different lorawan server might use different RX2DR and they don't info End Node via ADR message so cause the mismatch. If this happen, user need to change the RX2DR to the right value in end node. In OTAA, LoRaWAN Server will send the RX2DR setting in Join Accept message so the end node will auto adjust. but ABP uplink doesn't support this auto change.**
199 199  
200 -
201 201  == 5.2 See Debug Info ==
202 202  
203 203  (((
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212 212  Configure a downstream to the end device
213 213  )))
214 214  
215 -[[image:image-20220526164623-12.png]]
214 +[[image:https://wiki.dragino.com/images/thumb/8/82/Downstream_debug_1.png/600px-Downstream_debug_1.png||height="217" width="600"]]
216 216  
217 217  (((
218 218  Set a downstream in TTN and see it is sent
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223 223  This downstream info will then pass to the gateway downstream list. and include the DR which is used (SF9BW125) in EU868 is DR3
224 224  )))
225 225  
226 -[[image:image-20220526164650-13.png]]
225 +[[image:https://wiki.dragino.com/images/thumb/d/dc/Downstream_debug_2.png/600px-Downstream_debug_2.png||height="245" width="600"]]
227 227  
228 228  (((
229 229  Gateway Traffic can see this downstream info
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238 238  When the downstream packet appear on the traffic of Gateway page. The LoRaWAN gateway can get it from LoRaWAN server and transmit it. In Dragion Gateway, this can be checked by runinng "logread -f" in the SSH console. and see below:
239 239  )))
240 240  
241 -[[image:image-20220526164734-14.png]]
240 +[[image:https://wiki.dragino.com/images/thumb/2/21/Downstream_debug_3.png/600px-Downstream_debug_3.png||height="195" width="600"]]
242 242  
243 243  (((
244 244  Gateway Sent out this packet
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298 298   Receive data
299 299   1:0012345678}}}
300 300  
301 -(% class="wikigeneratedid" %)
302 -​​​​​​​
303 -
304 304  == 5.3 If problem doesn’t solve ==
305 305  
306 306  **If user has checked below steps and still can't solve the problem, please send us (support @ dragino.com) the sceenshots for each step to check. They include:**
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