Issue link: https://read.uberflip.com/i/1479525
LoRaWAN® Regional Parameters RP002-1.0.4 ©2022 LoRa Alliance ® Page 39 of 101 The authors reserve the right to change specifications without notice. 12 LoRa: SF8 / 500 kHz 12500 13 LoRa: SF7 / 500 kHz 21900 14 RFU 15 Defined in [TS001] 18 Table 15: US902-928 TX data rate 719 Note: DR4 is purposely identical to DR12. DR8…13 refer to data rates 720 that are only used for downlink messages. 721 722 US902-928 end-devices SHALL support one of the two following data rate options: 723 1. [DR0 to DR4] and [DR8 to DR13] (minimum set supported for certification) 724 2. [DR0 to DR13] (all data rates implemented) 725 For both options, all data rates in the range specified SHALL be implemented (meaning no 726 intermediate DR may be left unimplemented). 727 When the end-device is using the Adaptive Data Rate mode and transmits using the 728 DRcurrent data rate, the following table defines the next data rate (DRnext) the end-device 729 SHALL use during data rate back-off: 730 DRcurrent DRnext Comment 0 NA Already the default lowest data rate 1 0 2 1 3 2 4 3 5 0 6 5 DR 7 to DR15 are either RFU, reserved or only used in downlink Table 16: US902-928 data rate back-off 731 732 TXPower Configuration (Conducted Power) 0 30 dBm – 2*TXPower 1 28 dBm 2 26 dBm 3 : 13 …. 14 2 dBm 15 Defined in [TS001] 18 Table 17: US902-928 TXPower 733 2.5.4 US902-928 Join-Accept CFList 734 For LoRaWAN 1.0.1 and 1.0.2, the US902-928 region does not support the use of the 735 OPTIONAL CFList appended to the Join-Accept message. If the CFList is not empty, it SHALL 736 be ignored by the end-device. 737 The US902-928 LoRaWAN supports the use of the OPTIONAL CFList appended to the Join- 738 Accept message. If the CFList is not empty, the CFListType field SHALL contain the value 739 of one (0x01) to indicate the CFList contains a series of ChMask fields as defined in Section 740 2.3.2. Channel-ID values from 0 to 79 are supported and SHALL be interpreted as 741 the channel number to be enabled or disabled. A cleared bit in the CFList SHALL 742 disable the associated channel. 743 18 DR15 and TXPower15 are defined in the LinkADRReq MAC command of the LoRaWAN 1.0.4 and subsequent specifications and were previously RFU.