Issue link: https://read.uberflip.com/i/1428359
LoRaWAN 1.0.3 Regional Parameters ©2018 LoRa™ Alliance Page 56 of 71 The authors reserve the right to change specifications without notice. If the ChMaskCntl field value is one of values meaning RFU, the end-device SHOULD reject 1352 the command and unset the "Channel mask ACK" bit in its response. 1353 2.9.6 KR920-923 Maximum payload size 1354 The maximum MACPayload size length (M) is given by the following table for the regulation 1355 of dwell time; less than 4 sec with LBT. It is derived from limitation of the PHY layer depending 1356 on the effective modulation rate used taking into account a possible repeater encapsulation 1357 layer. The maximum application payload length in the absence of the optional FOpt control 1358 field (N) is also given for information only. The value of N might be smaller if the FOpt field is 1359 not empty: 1360 1361 DataRate M N 0 59 51 1 59 51 2 59 51 3 123 115 4 230 222 5 230 222 6:15 Not defined Table 63: KR920-923 maximum payload size 1362 If the end-device will never operate with a repeater then the maximum application payload 1363 length in the absence of the optional FOpt control field SHOULD be: 1364 1365 DataRate M N 0 59 51 1 59 51 2 59 51 3 123 115 4 250 242 5 250 242 6:15 Not defined Table 64 : KR920-923 maximum payload size (not repeater compatible) 1366 1367 2.9.7 KR920-923 Receive windows 1368 The RX1 receive window uses the same channel than the preceding uplink. The data rate is 1369 a function of the uplink data rate and the RX1DROffset as given by the following table. The 1370 allowed values for RX1DROffset are in the [0:5] range. Values in the [6:7] range are reserved 1371 for future use. 1372 1373 RX1DROffset 0 1 2 3 4 5 Upstream data rate Downstream data rate in RX1 slot DR0 DR0 DR0 DR0 DR0 DR0 DR0 DR1 DR1 DR0 DR0 DR0 DR0 DR0 DR2 DR2 DR1 DR0 DR0 DR0 DR0 DR3 DR3 DR2 DR1 DR0 DR0 DR0 DR4 DR4 DR3 DR2 DR1 DR0 DR0 DR5 DR5 DR4 DR3 DR2 DR1 DR0