Issue link: https://read.uberflip.com/i/1428362
LoRaWAN 1.0.2 Regional Parameters ©2017 LoRa Alliance™ Page 39 of 55 The authors reserve the right to change specifications without notice. The following table gives the list of frequencies that should be used by end-devices to 1030 broadcast the JoinReq message. 1031 Modulation Bandwidth [kHz] Channel Frequency [MHz] FSK Bitrate or LoRa DR / Bitrate Nb Channels Duty cycle LoRa 125 923.20 923.40 DR2 2 < 1% Table 49: AS923 JoinReq Channel List 1032 The default JoinReq Data Rate is DR2 (SF10/125KHz), this setting ensures that end-devices 1033 are compatible with the 400ms dwell time limitation until the actual dwell time limit is notified 1034 to the end-device by the network server via the MAC command "TxParamSetupReq". 1035 The JoinReq message transmit duty-cycle shall follow the rules described in chapter 1036 "Retransmissions back-off" of the LoRaWAN specification document. 1037 1038 2.7.3 AS923 Data Rate and End-point Output Power encoding 1039 The "TxParamSetupReq/Ans" MAC command MUST be implemented by the AS923 1040 devices. 1041 The following encoding is used for Data Rate (DR) in the AS923 band: 1042 1043 DataRate Configuration Indicative physical bit rate [bit/s] 0 LoRa: SF12 / 125 kHz 250 1 LoRa: SF11 / 125 kHz 440 2 LoRa: SF10 / 125 kHz 980 3 LoRa: SF9 / 125 kHz 1760 4 LoRa: SF8 / 125 kHz 3125 5 LoRa: SF7 / 125 kHz 5470 6 LoRa: SF7 / 250 kHz 11000 7 FSK: 50 kbps 50000 8..15 RFU Table 50: Data rate table 1044 1045 The TXPower table indicates power levels relative to the Max EIRP level of the end-device, 1046 as per the following table: 1047 1048 TXPower Configuration (EIRP) 0 MaxEIRP 1 MaxEIRP – 2dB 2 MaxEIRP – 4dB 3 MaxEIRP – 6dB 4 MaxEIRP – 8dB 5 MaxEIRP – 10dB 6 MaxEIRP – 12dB 7 MaxEIRP – 14dB 8..15 RFU Table 51: TxPower table 1049 1050