Issue link: https://read.uberflip.com/i/1428362
LoRaWAN 1.0.2 Regional Parameters ©2017 LoRa Alliance™ Page 20 of 55 The authors reserve the right to change specifications without notice. 2.3.3 CN779-787 Data Rate and End-device Output Power encoding 556 There is no dwell time limitation for the CN779-787 PHY layer. The TxParamSetupReq 557 MAC command is not implemented by CN779-787 devices. 558 The following encoding is used for Data Rate (DR) and End-device EIRP (TXPower) in the 559 CN780 band: 560 DataRate Configuration Indicative physical bit rate [bit/s] TXPower Configuration (EIRP) 0 LoRa: SF12 / 125 kHz 250 0 MaxEIRP 1 LoRa: SF11 / 125 kHz 440 1 MaxEIRP – 2dB 2 LoRa: SF10 / 125 kHz 980 2 MaxEIRP – 4dB 3 LoRa: SF9 / 125 kHz 1760 3 MaxEIRP – 6dB 4 LoRa: SF8 / 125 kHz 3125 4 MaxEIRP – 8dB 5 LoRa: SF7 / 125 kHz 5470 5 MaxEIRP – 10dB 6 LoRa: SF7 / 250 kHz 11000 6..15 RFU 7 FSK: 50 kbps 50000 8..15 RFU Table 20: Data rate and TX power table 561 562 EIRP refers to the Equivalent Isotropically Radiated Power, which is the radiated output 563 power referenced to an isotropic antenna radiating power equally in all directions and whose 564 gain is expressed in dBi. 565 566 By default MAxEIRP is considered to be +12.15dBm. If the end-device cannot achieve 567 12.15dBm EIRP, the Max EIRP should be communicated to the network server using an out- 568 of-band channel during the end-device commissioning process. 569 570 2.3.4 CN779-787 JoinAccept CFList 571 The CN780 ISM band LoRaWAN implements an optional channel frequency list (CFlist) of 572 16 octets in the JoinAccept message. 573 In this case the CFList is a list of five channel frequencies for the channels four to eight 574 whereby each frequency is encoded as a 24 bits unsigned integer (three octets). All these 575 channels are usable for DR0 to DR5 125kHz LoRa modulation. The list of frequencies is 576 followed by a single RFU octet for a total of 16 octets. 577 578 Size (bytes) 3 3 3 3 3 1 CFList Freq Ch4 Freq Ch5 Freq Ch6 Freq Ch7 Freq Ch8 RFU The actual channel frequency in Hz is 100 x frequency whereby values representing 579 frequencies below 100 MHz are reserved for future use. This allows setting the frequency of 580 a channel anywhere between 100 MHz to 1.67 GHz in 100 Hz steps. Unused channels have 581 a frequency value of 0. The CFList is optional and its presence can be detected by the 582 length of the join-accept message. If present, the CFList replaces all the previous channels 583 stored in the end-device apart from the three default channels. 584 The newly defined channels are immediately enabled and usable by the end-device for 585 communication. 586