Issue link: https://read.uberflip.com/i/1428395
LoRaWAN ® L2 1.0.4 Specification © 2020 LoRa Alliance ® Page 33 of 90 The authors reserve the right to change specifications without notice. The maximum end-device transmit duty cycle allowed is 1016 1017 Aggregated duty cycle = 1/2 MaxDutyCycle 1018 The valid range for MaxDutyCycle is [0:15]. A value of 0 corresponds to 100% duty 1019 cycle, therefore "no duty cycle limitation" except the one set by the regional regulation. 1020 1021 Note: when applying a DutyCycleReq command, the end-device will 1022 use whichever is the lowest of either the region limitation for the specific 1023 sub-band, or the value from the restriction defined by DutyCycleReq 1024 which is aggregated over all sub-bands. 1025 1026 When MaxDutyCycle is different than 0, an end-device SHALL respect a silence period T off 1027 before transmitting a frame on any channel. This silence ensures that the duty cycle limit is 1028 met even over short observation windows. It is computed as: 1029 1030 = ∗ (2 − 1) 1031 1032 Note: the DutyCycleReq command is used by the Network Server for 1033 traffic shaping, to limit the transmissions from a given end-device. It is 1034 calculated by the above formula, which may be different than the duty 1035 cycle measurement methods defined by the regulations which have 1036 such a limitation. 1037 1038 An end-device SHALL answer a DutyCycleReq with a DutyCycleAns command. The 1039 DutyCycleAns MAC reply contains no payload. 1040 5.4 Receive Windows Parameters (RXParamSetupReq, 1041 RXParamSetupAns) 1042 End-devices and Network Servers SHALL implement these commands. 1043 The RXParamSetupReq command allows a change to the frequency and the data rate set 1044 for RX2 following each uplink. The command also allows an offset to be programmed between 1045 the uplink and the RX1 slot downlink data rates. 1046 1047 1048 Size (octets) 1 3 RXParamSetupReq payload DLSettings Frequency Table 26: RXParamSetupReq payload format 1049 1050 1051 1052 Bits 7 6:4 3:0 DLSettings RFU RX1DROffset RX2DataRate Table 27: DLSettings field format 1053 1054