Issue link: https://read.uberflip.com/i/1428383
LoRaWAN 1.0.3 Specification ©2018 LoRa™ Alliance Page 31 of 72 The authors reserve the right to change specifications without notice. The TxParamSetupReq command can be used to notify the end-device of the maximum 858 allowed dwell time, i.e. the maximum continuous transmission time of a packet over the air, 859 as well as the maximum allowed end-device Effective Isotropic Radiated Power (EIRP). 860 861 862 The structure of EIRP_DwellTime field is described below: 863 Bits 7:6 5 4 3:0 MaxDwellTime RFU DownlinkDwellTime UplinkDwellTime MaxEIRP 864 Bits [0…3] of TxParamSetupReq command are used to encode the Max EIRP value, as per 865 the following table. The EIRP values in this table are chosen in a way that covers a wide range 866 of max EIRP limits imposed by the different regional regulations. 867 868 Coded Value 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Max EIRP (dBm) 8 10 12 13 14 16 18 20 21 24 26 27 29 30 33 36 The maximum EIRP corresponds to an upper bound on the device's radio transmit power. The 869 device is not required to transmit at that power , but SHALL never radiate more that this 870 specified EIRP. 871 Bits 4 and 5 define the maximum Uplink and downlink dwell tim e respectively, which is 872 encoded as per the following table: 873 Coded Value Dwell Time 0 No Limit 1 400 ms 874 When this MAC command is implemented (region specific), the end-device acknowledges the 875 TxParamSetupReq command by sending a TxParamSetupAns command. This 876 TxParamSetupAns command doesn't contain any payload. 877 When this MAC command is used in a region where it is not required, the device does not 878 process it and SHALL NOT transmit an acknowledgement. 879 880 881 5.9 DeviceTime commands (DeviceTimeReq, DeviceTimeAns) 882 This MAC command is only available if the device is activated on a LoRaWAN1.0.3 or later 883 compatible Network Server. LoRaWAN1.0.2 or earlier servers do not implement this MAC 884 command. 885 With the DeviceTimeReq command, an end-device MAY request from the network the current 886 network time. This allows the device to synchronize its internal clock to the network's clock. 887 Size (bytes) 1 TxParamSetup payload EIRP_DwellTime