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Gz_it
Gz_it
Associate III
May 23, 2019
Solved

Why I can't received a message downlink immediately?

  • May 23, 2019
  • 1 reply
  • 663 views

Hi All;

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I am use I-CUBE-LRWAN version 1.2.1. I am program in class C mode. I send a message downlink from network server and I checked that the data was actually sent out. Why I can't received a message downlink immediately. Could you please advice me?

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Thank you,

Best regards.​

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This topic has been closed for replies.
Best answer by Stinde

Hi,

I have noticed the same problem using End_Node example. I have changed APP_TX_DUTYCYCLE  to 900000 (15min) and LORAWAN_DEFAULT_CLASS to CLASS_C

5-7 min after uplink message, downlink message is received .After that and before next uplink, downlink messages don't get received.

I have tested this with B-L072Z-LRWAN1 and own HW-designs with i-cube_LRWAN 1.2.1 based FW and CMWX1ZZABZ-091 radio.

There is also problem with receiving JoinAccept messages, which might relate to downlink receive problems. The end mode might require 2-3 JoinRequire/JoinAccept messages before it has really joined the network.

BR,

Timo

1 reply

Stinde
StindeAnswer
Associate II
August 15, 2019

Hi,

I have noticed the same problem using End_Node example. I have changed APP_TX_DUTYCYCLE  to 900000 (15min) and LORAWAN_DEFAULT_CLASS to CLASS_C

5-7 min after uplink message, downlink message is received .After that and before next uplink, downlink messages don't get received.

I have tested this with B-L072Z-LRWAN1 and own HW-designs with i-cube_LRWAN 1.2.1 based FW and CMWX1ZZABZ-091 radio.

There is also problem with receiving JoinAccept messages, which might relate to downlink receive problems. The end mode might require 2-3 JoinRequire/JoinAccept messages before it has really joined the network.

BR,

Timo

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