Issue link: https://read.uberflip.com/i/1540208
Regional Parameters RP002-1.0.5 ©2022-2025 LoRa Alliance ® Page 76 of 116 The authors reserve the right to change specifications without notice. The following table gives the list of frequencies that SHALL be used by end-devices to 1528 broadcast the Join-Request message: 1529 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 66: AS923 Join-Request channel list 1530 The default Join-Request Data Rate utilizes the range DR2-DR5 (SF10/125 kHz – SF7/125 1531 kHz). This setting ensures that end-devices are compatible with the 400ms dwell time 1532 limitation until the actual dwell time limit is notified to the end-device by the Network Server 1533 via the MAC command TxParamSetupReq. 1534 The Join-Request message transmit duty-cycle SHALL follow the rules described in chapter 1535 "Retransmissions back-off" of the LoRaWAN [TS001] specification document. 1536 3.10.3 AS923 Data Rate and End-Device Output Power Encoding 1537 The TxParamSetupReq/Ans MAC command SHALL be implemented by the AS923 devices. 1538 The following encoding is used for Data Rate (DR) in the AS923 band: 1539 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..11 RFU 12 LoRa: SF6 / 125 kHz 9375 13 LoRa: SF5 / 125 kHz 15625 14 RFU 15 Defined in [TS001] 3 Table 67: AS923 data rate 1540 1541 Data Rates DR12 and DR13 are allowed for use in AS923 since version RP002-1.0.5. 1542 1543 AS923 end-devices SHALL support the first of the following data rate options plus any 1544 combination of the other data rate options: 1545 1. DR0 to DR5 (minimum set supported for certification, REQUIRED to support) 1546 2. DR6 (an additional data rate that MAY be supported) 1547 3. DR7 (an additional data rate that MAY be supported) 1548 4. DR12 to DR13 (an additional pair of data rates that MAY be supported) 1549 For each of these listed options, all data rates in the range specified SHALL be implemented 1550 exactly as listed (meaning no listed data rate can be left unimplemented). 1551 1552