Issue link: https://read.uberflip.com/i/1428371
LoRaWAN Regional Parameters ©2016 LoRa™ Alliance Page 28 of 45 The authors reserve the right to change specifications without notice. 1 2 DataRate M N 0 19 11 1 61 53 2 134 126 3 250 242 4 250 242 5:7 Not defined 8 61 53 9 137 129 10 250 242 11 250 242 12 250 242 13 250 242 14:15 Not defined Table 32: AU915-928 maximum payload size (not repeater compatible) 3 2.5.7 AU915-928 Receive windows 4 The RX1 receive channel is a function of the upstream channel used to initiate the 5 data exchange. The RX1 receive channel can be determined as follows. 6 o RX1 Channel Number = Transmit Channel Number modulo 8 7 The RX1 window data rate depends on the transmit data rate (see Table 14 below). 8 The RX2 (second receive window) settings uses a fixed data rate and frequency. 9 Default parameters are 923.3Mhz / DR8 10 11 Upstream data rate Downstream data rate RX1DROffset 0 1 2 3 DR0 DR10 DR9 DR8 DR8 DR1 DR11 DR10 DR9 DR8 DR2 DR12 DR11 DR10 DR9 DR3 DR13 DR12 DR11 DR10 DR4 DR13 DR13 DR12 DR11 Table 33: AU RX1DROffset 12 The allowed values for RX1DROffset are in the [0:3] range. Values in the range [4:7] are 13 reserved for future use. 14 2.5.8 AU915-928 Default Settings 15 The following parameters are recommended values for the AU915-928 band. 16 RECEIVE_DELAY1 1 s 17 RECEIVE_DELAY2 2 s (must be RECEIVE_DELAY1 + 1s) 18 JOIN_ACCEPT_DELAY1 5 s 19 JOIN_ACCEPT_DELAY2 6 s 20 MAX_FCNT_GAP 16384 21 ADR_ACK_LIMIT 64 22 ADR_ACK_DELAY 32 23 ACK_TIMEOUT 2 +/- 1 s (random delay between 1 and 3 seconds) 24 If the actual parameter values implemented in the end-device are different from those default 25 values (for example the end-device uses a longer RECEIVE_DELAY1 & 2 latency), those 26 parameters must be communicated to the network server using an out-of-band channel 27