Issue link: https://read.uberflip.com/i/1479525
LoRaWAN® Regional Parameters RP002-1.0.4 ©2022 LoRa Alliance ® Page 75 of 101 The authors reserve the right to change specifications without notice. KR920-923 MHz band end-devices SHALL use the following default parameters: 1500 • Default EIRP output power for end-device (920.9~921.9 MHz): 10 dBm 1501 • Default EIRP output power for end-device (922.1~923.3 MHz): 14 dBm 1502 • Default EIRP output power for gateway: 23 dBm 1503 KR920-923 MHz end-devices SHALL be capable of operating in the 920 to 923 MHz frequency 1504 band and SHALL feature a channel data structure to store the parameters of at least 24 1505 channels. A channel data structure corresponds to a frequency and a set of data rates usable 1506 on this frequency. 1507 The following table gives the list of frequencies that SHALL be used by end-devices to 1508 broadcast the Join-Request message: 1509 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 68: KR920-923 Join-Request channel list 1510 2.11.3 KR920-923 Data Rate and End-Device Output Power Encoding 1511 There is no dwell time limitation for the KR920-923 PHY layer. The TxParamSetupReq MAC 1512 command is not implemented by KR920-923 devices. 1513 The following encoding is used for Data Rate (DR), and EIRP Output Power (TXPower) in the 1514 KR920-923 band: 1515 1516 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..14 RFU 15 Defined in [TS001] 31 Table 69: KR920-923 TX data rate 1517 KR920-923 end-devices SHALL support the following data rates: 1518 1. DR0 to DR5 (minimum set supported for certification) 1519 All data rates in the range specified SHALL be implemented (meaning no intermediate DR 1520 may be left unimplemented). 1521 When the device is using the Adaptive Data Rate mode and transmits using the DRcurrent 1522 data rate, the following table defines the next data rate (DRnext) the end-device SHALL use 1523 during data rate back-off: 1524 1525