Issue link: https://read.uberflip.com/i/1428362
LoRaWAN 1.0.2 Regional Parameters ©2017 LoRa Alliance™ Page 47 of 55 The authors reserve the right to change specifications without notice. 2.8.8 KR920-923 Class B beacon and default downlink channel 1232 The beacons SHALL be transmitted using the following settings 1233 DR 3 Corresponds to SF9 spreading factor with 125 kHz BW CR 1 Coding rate = 4/5 Signal polarity Non-inverted As opposed to normal downlink traffic which uses inverted signal polarity Table 65 : KR920-923 beacon settings 1234 1235 The beacon frame content is: 1236 Size (bytes) 2 4 2 7 2 BCNPayload RFU Time CRC GwSpecific CRC The beacon default broadcast frequency is 923.1MHz. 1237 The class B default downlink pingSlot frequency is 923.1MHz 1238 1239 2.8.9 KR920-923 Default Settings 1240 The following parameters are recommended values for the KR920-923Mhz band. 1241 RECEIVE_DELAY1 1 s 1242 RECEIVE_DELAY2 2 s (must be RECEIVE_DELAY1 + 1s) 1243 JOIN_ACCEPT_DELAY1 5 s 1244 JOIN_ACCEPT_DELAY2 6 s 1245 MAX_FCNT_GAP 16384 1246 ADR_ACK_LIMIT 64 1247 ADR_ACK_DELAY 32 1248 ACK_TIMEOUT 2 +/- 1 s (random delay between 1 and 3 seconds) 1249 If the actual parameter values implemented in the end-device are different from those default 1250 values (for example the end-device uses a longer RECEIVE_DELAY1 and 1251 RECEIVE_DELAY2 latency), those parameters must be communicated to the network 1252 server using an out-of-band channel during the end-device commissioning process. The 1253 network server may not accept parameters different from those default values. 1254 1255