Issue link: https://read.uberflip.com/i/1540208
Regional Parameters RP002-1.0.5 ©2022-2025 LoRa Alliance ® Page 60 of 116 The authors reserve the right to change specifications without notice. 3.8.5 AU915-928 LinkADRReq Command 1188 The AU915-928 channel plan of LoRaWAN supports a minimum of 72 and a maximum of 80 1189 channels. The ChMaskCntl field of the LinkADRReq command has the following meaning: 1190 1191 ChMaskCntl ChMask Applies To 0 Channels 0 to 15 1 Channels 16 to 31 2 Channels 32 to 47 3 Channels 48 to 63 4 Channels 64 to 79 5 8 LSBs (bits 0-7) control Channel Blocks 0 to 7, bit 9 controls Channel Block 9 only when channels in this block have been previously created. Bit 8 and 6 MSBs (bits 10- 15) are RFU. 6 All 125 kHz ON: ChMask applies to channels 64 to 79 7 All 125 kHz OF : ChMask applies to channels 64 to 79 Table 43: AU915-928 ChMaskCntl value 1192 If ChMaskCntl = 5 6 , bits 0-7 in the ChMask enable and disable a bank of eight 125 kHz 1193 channels and the corresponding 500 kHz channel defined by the following calculation: 1194 [ChannelMaskBit * 8, ChannelMaskBit * 8 +7],64+ChannelMaskBit. Bit 9 in the 1195 ChMask enable and disable a bank of eight channels defined by the following calculation: 1196 [ChannelMaskBit * 8, ChannelMaskBit * 8 +7]. 1197 If ChMaskCntl = 6, 125 kHz channels are enabled. If ChMaskCntl = 7, 125 kHz channels 1198 are disabled. Simultaneously the channels 64 to 79 are set according to the ChMask bit mask. 1199 The data rate specified in the command need not be valid for channels specified in the 1200 ChMask, as it governs the global operational state of the end-device. 1201 3.8.6 AU915-928 Maximum Payload Size 1202 The maximum MACPayload size length (M) is given by the following table for both uplink dwell 1203 time configurations: No Limit and 400ms. It is derived from the maximum allowed transmission 1204 time at the PHY layer, taking into account a possible repeater encapsulation. The maximum 1205 application payload length in the absence of the OPTIONAL FOpts MAC control field (N) is 1206 also given for information only. The value of N might be smaller if the FOpts field is not empty. 1207 1208