Issue link: https://read.uberflip.com/i/1479525
LoRaWAN® Regional Parameters RP002-1.0.4 ©2022 LoRa Alliance ® Page 68 of 101 The authors reserve the right to change specifications without notice. Modulation Bandwidth [kHz] Channel Frequency [Hz] LoRa DR / Bitrate Number of Channels Duty Cycle LoRa 125 923200000 + AS923_FREQ_OFFSET_HZ DR2 to DR5 / 0.9-5 kbps 2 < 1% 923400000 + AS923_FREQ_OFFSET_HZ Table 56: AS923 Join-Request channel list 1353 The default Join-Request Data Rate utilizes the range DR2-DR5 (SF10/125 kHz – SF7/125 1354 kHz). This setting ensures that end-devices are compatible with the 400ms dwell time 1355 limitation until the actual dwell time limit is notified to the end-device by the Network Server 1356 via the MAC command TxParamSetupReq. 1357 The Join-Request message transmit duty-cycle SHALL follow the rules described in chapter 1358 "Retransmissions back-off" of the LoRaWAN [TS001] specification document. 1359 2.10.3 AS923 Data Rate and End-Point Output Power Encoding 1360 The TxParamSetupReq/Ans MAC command SHALL be implemented by the AS923 devices. 1361 The following encoding is used for Data Rate (DR) in the AS923 band: 1362 Data Rate 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..14 RFU 15 Defined in [TS001] 31 Table 57: AS923 data rate 1363 AS923 end-devices SHALL support one of the two following data rate options: 1364 1. DR0 to DR5 (minimum set supported for certification) 1365 2. DR0 to DR7 1366 For both options, all data rates in the range specified SHALL be implemented (meaning no 1367 intermediate DR may be left unimplemented). 1368 1369 1370