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LoRaWAN® Regional Parameters RP002-1.0.4 ©2022 LoRa Alliance ® Page 64 of 101 The authors reserve the right to change specifications without notice. 2.9.7.2 Channel Plan for 26 MHz Antenna Systems 1263 • For both plans, the RX1 receive channel is a function of the upstream channel used to 1264 initiate the data exchange. The RX1 receive channel can be determined as follows: 1265 o RX1 Channel Number = Transmit Channel Number modulo 24 1266 • The RX2 default frequency is: 1267 o For Channel plan A: 492.5 MHz 1268 o For Channel plan B: 502.5 MHz 1269 2.9.8 CN470-510 Class B Beacon 1270 The beacon frame content is defined in section 4.1.3. 17 1271 The beacons are transmitted using the following settings: 1272 1273 DR 2 Corresponds to SF10 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 frequencies Defined per plan below Table 49: CN470-510 beacon settings 1274 2.9.8.1 Default Beacon and Ping-Slot Channel Numbers and Ping-Slots for 20 MHz 1275 Antenna Systems 1276 Defaults for Channel plan Type A are shown in the following table along with the downstream 1277 channel used for beacons, according to the common join channel the end-device used: 1278 1279 Common Join Channel Index Beacon Channel Number 0 [ ( _ _ )] 8 1 8 +[ ( _ _ )] 8 2 16 +[ ( _ _ )] 8 3 24 +[ ( _ _ )] 8 4 32 +[ ( _ _ )] 8 5 40 +[ ( _ _ )] 8 6 48 +[ ( _ _ )] 8 7 56 +[ ( _ _ )] 8 Table 50: Beacon channel number for channel plan type A for 20 MHz antenna 1280 • where beacon_time is the integer value of the 4-byte Time field of the beacon 1281 frame 1282 • where beacon_period is the periodicity of beacons, 128 seconds 1283 • where floor(x) designates rounding to the integer immediately inferior or equal to 1284 x 1285 The downstream channel used for a ping-slot channel is shown in the following table, 1286 according to the common join channel the end-device used: 1287 1288 Common Join Channel Index Ping-Slot Channel Number

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