[riot-notifications] [RIOT-OS/RIOT] net/gnrc_lorawan: implement unconfirmed uplink redundancy (#15946)

Akshai M (Augustus Diode) notifications at github.com
Tue Jul 20 14:56:51 CEST 2021

Tested with Chirspstack and it seems to fail. Here are the results.

1. OTAA/ Unconfirimed Messages / Redundancy set to 3.
Result : Node retransmits on different frequencies but occasionally on the same frequency. This seems to against the standard which states 

> Line 681 : The end-device performs  frequency  hopping  as  usual  between  repeated  transmissions,  it does wait after each repetition until the receive windows have expired

2. :heavy_check_mark: Link Check option set /  Redundancy set to 3.
Result : No retries.




3. :x: ABP Mode ( fake keys) /  Redundancy set to 3/ Unconfirmed uplinks

The device sends uplinks on the same channel




4. :x: ABP Mode ( fake keys) /  Redundancy set to 3/ Confirmed uplinks

The device continues to retry uplinks.




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