Issue link: https://read.uberflip.com/i/1540208
Regional Parameters RP002-1.0.5 ©2022-2025 LoRa Alliance ® Page 84 of 116 The authors reserve the right to change specifications without notice. KR920-923 MHz band end-devices SHALL use the following default parameters: 1711 • Default EIRP output power for end-device (920.9~921.9 MHz): 10 dBm 1712 • Default EIRP output power for end-device (922.1~923.3 MHz): 14 dBm 1713 • Default EIRP output power for gateway: 23 dBm 1714 KR920-923 MHz end-devices SHALL be capable of operating in the 920 to 923 MHz frequency 1715 band and SHALL feature a channel data structure to store the parameters of at least 24 1716 channels. A channel data structure corresponds to a frequency and a set of data rates usable 1717 on this frequency. 1718 The following table gives the list of frequencies that SHALL be used by end-devices to 1719 broadcast the Join-Request message: 1720 Modulation Bandwidth [kHz] Channel Frequency [MHz] LoRa DR / Bitrate Number of Channels LoRa 125 922.10 922.30 922.50 DR0 to DR5 / 0.3-5 kbps 3 Table 79: KR920-923 Join-Request channel list 1721 3.11.3 KR920-923 Data Rate and End-Device Output Power Encoding 1722 There is no dwell time limitation for the KR920-923 PHY layer. The TxParamSetupReq MAC 1723 command is not implemented by KR920-923 devices. 1724 The following encoding is used for Data Rate (DR) in the KR920-923 band: 1725 1726 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 6:11 RFU 12 LoRa: SF6 / 125 kHz 9375 13 LoRa: SF5 / 125 kHz 15625 14 RFU 15 Defined in [TS001] 3 Table 80: KR920-923 TX data rate 1727 Data Rates DR12 and DR13 are allowed for use in KR920-923 since version RP002-1.0.5. 1728 KR920-923 end-devices SHALL support the first of the following data rate options plus 1729 optionally the other data rate option: 1730 1. DR0 to DR5 (minimum set supported for certification, REQUIRED to support) 1731 2. DR12 to DR13 (an additional pair of data rates that MAY be supported) 1732 1733 For each of the listed options, all data rates in the range specified SHALL be implemented 1734 exactly as listed (meaning no listed data rate can be left unimplemented). 1735 The list of data rates supported by the end-device SHOULD be communicated, as part of the 1736 device profile, to the Network Server, using an out-of-band channel during the end-device 1737 commissioning process. 1738