LoRaWAN Regional Parameters
©2016 LoRa™ Alliance Page 42 of 45
The authors reserve the right to change
specifications without notice.
RX1DROffset 0 1 2 3 4 5
Upstream data rate Downstream data rate in RX1 slot
DR3 DR3 DR2 DR1 DR0 DR0 DR0
DR4 DR4 DR3 DR2 DR1 DR0 DR0
DR5 DR5 DR4 DR3 DR2 DR1 DR0
1
The RX2 receive window uses a fixed frequency and data rate. The default parameters are 2
921.90MHz / DR0 (SF12, 125 kHz) 3
2.8.8 KR920-923 Default Settings 4
The following parameters are recommended values for the KR920-923Mhz band. 5
RECEIVE_DELAY1 1 s 6
RECEIVE_DELAY2 2 s (must be RECEIVE_DELAY1 + 1s) 7
JOIN_ACCEPT_DELAY1 5 s 8
JOIN_ACCEPT_DELAY2 6 s 9
MAX_FCNT_GAP 16384 10
ADR_ACK_LIMIT 64 11
ADR_ACK_DELAY 32 12
ACK_TIMEOUT 2 +/- 1 s (random delay between 1 and 3 seconds) 13
If the actual parameter values implemented in the end-device are different from those default 14
values (for example the end-device uses a longer RECEIVE_DELAY1 and 15
RECEIVE_DELAY2 latency), those parameters must be communicated to the network 16
server using an out-of-band channel during the end-device commissioning process. The 17
network server may not accept parameters different from those default values. 18
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