[tkddlf4209@gmail.com]

then, Is it right to disable the LBT option to retrasmit messages when this channel is busy? (with AT+ACK=1 or more)

I have one more question

i using Lora Gateway made in RAK
Lora packet Logger in RAK gateway show uplink & downlink(ACK) message correctly when i send AT+SEND message , But not receive ACK Message in Multitech Lora Module sometimes why is that? (is not channel busy)

so If AT+ACK set to 2 or more
Although the ACK message is sent from the ARK Lora gateway to the downlink, the Multitech module does not recognize the ACK and resends the uplink message according to the number of retransmissions set by the AT + ACK option.

I tried to increase the Recv time to 3 seconds to receive the ACK message, but the phenomenon still occurs.

* RAK Lora Gateway Packet Logger INFO (Uplink & Downlink(ACK))
– Uplink
{
“fType”: 0,
“freq”: 922900000,
“chan”: 4,
“tmst”: 1200072524,
“rfch”: 1,
“stat”: 1,
“rssi”: -125,
“size”: 62,
“modu”: “LORA”,
“datr”: “SF12BW125”,
“codr”: “4/5”,
“lsnr”: -18.8,
“data”: “gKCZGgCgRAABmtJznW1eIs1klm8fsMorz2n6MCRDn/bKKv8UhhnDw7qHBbQPq9lz9NOOdoEMzqTGQz3OAHc=”
}{
“MHDR”: {
“MType”: “Confirmed Data Up”,
“RFU”: 0,
“Major”: 0
},
“MACPayload”: {
“FHDR”: {
“DevAddr”: “001A99A0”,
“FCtrl”: {
“ADR”: true,
“ADRACKReq”: false,
“ClassB”: false,
“ACK”: true,
“FOptsLen”: 0
},
“FCnt”: 68
},
“FPort”: 1,
“FRMPayload”: “01 9A D2 73 9D 6D 5E 22 CD 64 96 6F 1F B0 CA 2B CF 69 FA 30 24 43 9F F6 CA 2A FF 14 86 19 C3 C3 BA 87 05 B4 0F AB D9 73 F4 D3 8E 76 81 0C CE A4 C6 ”
},
“MIC”: “3DCE0077”
}

– downlink
{
“fType”: 0,
“freq”: 922900000,
“mode”: “timerstamped”,
“tmst”: 1201072508,
“rfch”: 0,
“powe”: 23,
“prea”: 8,
“ncrc”: false,
“modu”: “LORA”,
“datr”: “SF12BW125”,
“codr”: “4/5”,
“ipol”: true,
“size”: 18,
“data”: “oKCZGgCwNQABWSVBpbjK6J0w”
}{
“MHDR”: {
“MType”: “Confirmed Data Down”,
“RFU”: 0,
“Major”: 0
},
“MACPayload”: {
“FHDR”: {
“DevAddr”: “001A99A0”,
“FCtrl”: {
“ADR”: true,
“RFU”: 0,
“FPending”: true,
“ACK”: true,
“FOptsLen”: 0
},
“FCnt”: 53
},
“FPort”: 1,
“FRMPayload”: “01 59 25 41 A5 ”
},
“MIC”: “CAE89D30”
}

Summary: The RAK Lora Gateway logs the downlink ACK message for the uplink, but the Multitech Lora Module often fails to receive the ACK.

Lora Module same as manufacturer (RAK) works without problem

Is there an option to change with AT command?

• This reply was modified 5 years, 2 months ago by tkddlf4209@gmail.com.
• This reply was modified 5 years, 2 months ago by tkddlf4209@gmail.com.
• This reply was modified 5 years, 2 months ago by tkddlf4209@gmail.com.

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