LoRaWAN® Regional Parameters v1.0.3revA

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LoRaWAN 1.0.3 Regional Parameters ©2018 LoRa™ Alliance Page 55 of 71 The authors reserve the right to change specifications without notice. EIRP refers to the Equivalent Isotropically Radiated Power, which is the radiated output 1319 power referenced to an isotropic antenna radiating power equally in all directions and whose 1320 gain is expressed in dBi. 1321 1322 By default MaxEIRP is considered to be +14dBm. If the end-device cannot achieve 14dBm 1323 EIRP, the MaxEIRP SHOULD be communicated to the network server using an out-of-band 1324 channel during the end-device commissioning process. 1325 When the device transmits in a channel whose frequency is <922MHz, the transmit power 1326 SHALL be limited to +10dBm EIRP even if the current transmit power level set by the 1327 network server is higher. 1328 2.9.4 KR920-923 JoinAccept CFList 1329 The KR920-923 ISM band LoRaWAN implements an optional channel frequency list (CFlist) 1330 of 16 octets in the JoinAccept message. 1331 In this case the CFList is a list of five channel frequencies for the channels three to seven 1332 whereby each frequency is encoded as a 24 bits unsigned integer (three octets). All these 1333 channels are usable for DR0 to DR5 125kHz LoRa modulation. 1334 The list of frequencies is followed by a single CFListType octet for a total of 16 octets. The 1335 CFListType SHALL be equal to zero (0) to indicate that the CFList contains a list of 1336 frequencies. 1337 1338 Size (bytes) 3 3 3 3 3 1 CFList Freq Ch3 Freq Ch4 Freq Ch5 Freq Ch6 Freq Ch7 CFListType The actual channel frequency in Hz is 100 x frequency whereby values representing 1339 frequencies below 100 MHz are reserved for future use. This allows setting the frequency of 1340 a channel anywhere between 100 MHz to 1.67 GHz in 100 Hz steps. Unused channels have 1341 a frequency value of 0. The CFList is optional and its presence can be detected by the length 1342 of the join-accept message. If present, the CFList replaces all the previous channels stored 1343 in the end-device apart from the three default channels. The newly defined channels are 1344 immediately enabled and usable by the end-device for communication. 1345 2.9.5 KR920-923 LinkAdrReq command 1346 The KR920-923 LoRaWAN only supports a maximum of 16 channels. When ChMaskCntl 1347 field is 0 the ChMask field individually enables/disables each of the 16 channels. 1348 1349 ChMaskCntl ChMask applies to 0 Channels 0 to 15 1 RFU .. .. 4 RFU 5 RFU 6 All channels ON The device SHOULD enable all currently defined channels independently of the ChMask field value. 7 RFU Table 62: KR920-923 ChMaskCntl value table 1350 1351

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